Mercurial > repos > chrisb > gap_all_glycan_tools

__license__ = "MIT"

# test if local js dashboard will work

if __name__ == "__main__":
    import sys

    try:
        inone = file(sys.argv[1],"read").readlines()
        out = file(sys.argv[2],"w")
        output="""
<!DOCTYPE html>
<html lang="en">
<head>
    <title>dc.js - Number Display Example</title>
    <meta charset="UTF-8">
</head>
<style>
div.dc-chart {
    float: left;
}

.dc-chart rect.bar {
    stroke: none;
    cursor: pointer;
}

.dc-chart rect.bar:hover {
    fill-opacity: .5;
}

.dc-chart rect.stack1 {
    stroke: none;
    fill: red;
}

.dc-chart rect.stack2 {
    stroke: none;
    fill: green;
}

.dc-chart rect.deselected {
    stroke: none;
    fill: #ccc;
}

.dc-chart .empty-chart .pie-slice path {
    fill: #FFEEEE;
    cursor: default;
}

.dc-chart .empty-chart .pie-slice {
    cursor: default;
}

.dc-chart .pie-slice {
    fill: white;
    font-size: 12px;
    cursor: pointer;
}

.dc-chart .pie-slice.external{
    fill: black;
}

.dc-chart .pie-slice :hover {
    fill-opacity: .8;
}

.dc-chart .pie-slice.highlight {
    fill-opacity: .8;
}

.dc-chart .selected path {
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
}

.dc-chart .deselected path {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .axis path, .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
}

.dc-chart .axis text {
    font: 10px sans-serif;
}

.dc-chart .grid-line {
    fill: none;
    stroke: #ccc;
    opacity: .5;
    shape-rendering: crispEdges;
}

.dc-chart .grid-line line {
    fill: none;
    stroke: #ccc;
    opacity: .5;
    shape-rendering: crispEdges;
}

.dc-chart .brush rect.background {
    z-index: -999;
}

.dc-chart .brush rect.extent {
    fill: steelblue;
    fill-opacity: .125;
}

.dc-chart .brush .resize path {
    fill: #eee;
    stroke: #666;
}

.dc-chart path.line {
    fill: none;
    stroke-width: 1.5px;
}

.dc-chart circle.dot {
    stroke: none;
}

.dc-chart g.dc-tooltip path {
    fill: none;
    stroke: grey;
    stroke-opacity: .8;
}

.dc-chart path.area {
    fill-opacity: .3;
    stroke: none;
}

.dc-chart .node {
    font-size: 0.7em;
    cursor: pointer;
}

.dc-chart .node :hover {
    fill-opacity: .8;
}

.dc-chart .selected circle {
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
}

.dc-chart .deselected circle {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .bubble {
    stroke: none;
    fill-opacity: 0.6;
}

.dc-data-count {
    float: right;
    margin-top: 15px;
    margin-right: 15px;
}

.dc-data-count .filter-count {
    color: #3182bd;
    font-weight: bold;
}

.dc-data-count .total-count {
    color: #3182bd;
    font-weight: bold;
}

.dc-data-table {
}

.dc-chart g.state {
    cursor: pointer;
}

.dc-chart g.state :hover {
    fill-opacity: .8;
}

.dc-chart g.state path {
    stroke: white;
}

.dc-chart g.selected path {
}

.dc-chart g.deselected path {
    fill: grey;
}

.dc-chart g.selected text {
}

.dc-chart g.deselected text {
    display: none;
}

.dc-chart g.county path {
    stroke: white;
    fill: none;
}

.dc-chart g.debug rect {
    fill: blue;
    fill-opacity: .2;
}

.dc-chart g.row rect {
    fill-opacity: 0.8;
    cursor: pointer;
}

.dc-chart g.row rect:hover {
    fill-opacity: 0.6;
}

.dc-chart g.row text {
    fill: white;
    font-size: 12px;
    cursor: pointer;
}

.dc-legend {
    font-size: 11px;
}

.dc-legend-item {
    cursor: pointer;
}

.dc-chart g.axis text {
    /* Makes it so the user can't accidentally click and select text that is meant as a label only */
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10 */
    -o-user-select: none;
    user-select: none;
    pointer-events: none;
}

.dc-chart path.highlight {
    stroke-width: 3;
    fill-opacity: 1;
    stroke-opacity: 1;
}

.dc-chart .highlight {
    fill-opacity: 1;
    stroke-opacity: 1;
}

.dc-chart .fadeout {
    fill-opacity: 0.2;
    stroke-opacity: 0.2;
}

.dc-chart path.dc-symbol, g.dc-legend-item.fadeout {
    fill-opacity: 0.5;
    stroke-opacity: 0.5;
}

.dc-hard .number-display {
    float: none;
}

.dc-chart .box text {
    font: 10px sans-serif;
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10 */
    -o-user-select: none;
    user-select: none;
    pointer-events: none;
}

.dc-chart .box line,
.dc-chart .box circle {
    fill: #fff;
    stroke: #000;
    stroke-width: 1.5px;
}

.dc-chart .box rect {
    stroke: #000;
    stroke-width: 1.5px;
}

.dc-chart .box .center {
    stroke-dasharray: 3,3;
}

.dc-chart .box .outlier {
    fill: none;
    stroke: #ccc;
}

.dc-chart .box.deselected .box {
    fill: #ccc;
}

.dc-chart .box.deselected {
    opacity: .5;
}

.dc-chart .symbol{
    stroke: none;
}

.dc-chart .heatmap .box-group.deselected rect {
    stroke: none;
    fill-opacity: .5;
    fill: #ccc;
}

.dc-chart .heatmap g.axis text {
    pointer-events: all;
    cursor: pointer;
}

</style>
<body>

<div id="chart-bar-ring"></div>
<div id="chart-row-pdb"></div>


<script>
!function() {
  var d3 = {
    version: "3.5.2"
  };
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  var d3_arraySlice = [].slice, d3_array = function(list) {
    return d3_arraySlice.call(list);
  };
  var d3_document = document, d3_documentElement = d3_document.documentElement, d3_window = window;
  try {
    d3_array(d3_documentElement.childNodes)[0].nodeType;
  } catch (e) {
    d3_array = function(list) {
      var i = list.length, array = new Array(i);
      while (i--) array[i] = list[i];
      return array;
    };
  }
  try {
    d3_document.createElement("div").style.setProperty("opacity", 0, "");
  } catch (error) {
    var d3_element_prototype = d3_window.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = d3_window.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
    d3_element_prototype.setAttribute = function(name, value) {
      d3_element_setAttribute.call(this, name, value + "");
    };
    d3_element_prototype.setAttributeNS = function(space, local, value) {
      d3_element_setAttributeNS.call(this, space, local, value + "");
    };
    d3_style_prototype.setProperty = function(name, value, priority) {
      d3_style_setProperty.call(this, name, value + "", priority);
    };
  }
  d3.ascending = d3_ascending;
  function d3_ascending(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  }
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n) if ((b = array[i]) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
        a = c = b;
        break;
      }
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  function d3_number(x) {
    return x === null ? NaN : +x;
  }
  function d3_numeric(x) {
    return !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
    } else {
      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.mean = function(array, f) {
    var s = 0, n = array.length, a, i = -1, j = n;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
    }
    if (j) return s / j;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.median = function(array, f) {
    var numbers = [], n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
    } else {
      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
    }
    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
  };
  d3.variance = function(array, f) {
    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) {
        if (d3_numeric(a = d3_number(array[i]))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    } else {
      while (++i < n) {
        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
          d = a - m;
          m += d / ++j;
          s += d * (a - m);
        }
      }
    }
    if (j > 1) return s / (j - 1);
  };
  d3.deviation = function() {
    var v = d3.variance.apply(this, arguments);
    return v ? Math.sqrt(v) : v;
  };
  function d3_bisector(compare) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  }
  var d3_bisect = d3_bisector(d3_ascending);
  d3.bisectLeft = d3_bisect.left;
  d3.bisect = d3.bisectRight = d3_bisect.right;
  d3.bisector = function(f) {
    return d3_bisector(f.length === 1 ? function(d, x) {
      return d3_ascending(f(d), x);
    } : f);
  };
  d3.shuffle = function(array, i0, i1) {
    if ((m = arguments.length) < 3) {
      i1 = array.length;
      if (m < 2) i0 = 0;
    }
    var m = i1 - i0, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
    }
    return array;
  };
  d3.permute = function(array, indexes) {
    var i = indexes.length, permutes = new Array(i);
    while (i--) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.pairs = function(array) {
    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
    return pairs;
  };
  d3.zip = function() {
    if (!(n = arguments.length)) return [];
    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
        zip[j] = arguments[j][i];
      }
    }
    return zips;
  };
  function d3_zipLength(d) {
    return d.length;
  }
  d3.transpose = function(matrix) {
    return d3.zip.apply(d3, matrix);
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.merge = function(arrays) {
    var n = arrays.length, m, i = -1, j = 0, merged, array;
    while (++i < n) j += arrays[i].length;
    merged = new Array(j);
    while (--n >= 0) {
      array = arrays[n];
      m = array.length;
      while (--m >= 0) {
        merged[--j] = array[m];
      }
    }
    return merged;
  };
  var abs = Math.abs;
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  function d3_class(ctor, properties) {
    for (var key in properties) {
      Object.defineProperty(ctor.prototype, key, {
        value: properties[key],
        enumerable: false
      });
    }
  }
  d3.map = function(object, f) {
    var map = new d3_Map();
    if (object instanceof d3_Map) {
      object.forEach(function(key, value) {
        map.set(key, value);
      });
    } else if (Array.isArray(object)) {
      var i = -1, n = object.length, o;
      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
    } else {
      for (var key in object) map.set(key, object[key]);
    }
    return map;
  };
  function d3_Map() {
    this._ = Object.create(null);
  }
  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
  d3_class(d3_Map, {
    has: d3_map_has,
    get: function(key) {
      return this._[d3_map_escape(key)];
    },
    set: function(key, value) {
      return this._[d3_map_escape(key)] = value;
    },
    remove: d3_map_remove,
    keys: d3_map_keys,
    values: function() {
      var values = [];
      for (var key in this._) values.push(this._[key]);
      return values;
    },
    entries: function() {
      var entries = [];
      for (var key in this._) entries.push({
        key: d3_map_unescape(key),
        value: this._[key]
      });
      return entries;
    },
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
    }
  });
  function d3_map_escape(key) {
    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
  }
  function d3_map_unescape(key) {
    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
  }
  function d3_map_has(key) {
    return d3_map_escape(key) in this._;
  }
  function d3_map_remove(key) {
    return (key = d3_map_escape(key)) in this._ && delete this._[key];
  }
  function d3_map_keys() {
    var keys = [];
    for (var key in this._) keys.push(d3_map_unescape(key));
    return keys;
  }
  function d3_map_size() {
    var size = 0;
    for (var key in this._) ++size;
    return size;
  }
  function d3_map_empty() {
    for (var key in this._) return false;
    return true;
  }
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(mapType, array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      if (mapType) {
        object = mapType();
        setter = function(keyValue, values) {
          object.set(keyValue, map(mapType, values, depth));
        };
      } else {
        object = {};
        setter = function(keyValue, values) {
          object[keyValue] = map(mapType, values, depth);
        };
      }
      valuesByKey.forEach(setter);
      return object;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var array = [], sortKey = sortKeys[depth++];
      map.forEach(function(key, keyMap) {
        array.push({
          key: key,
          values: entries(keyMap, depth)
        });
      });
      return sortKey ? array.sort(function(a, b) {
        return sortKey(a.key, b.key);
      }) : array;
    }
    nest.map = function(array, mapType) {
      return map(mapType, array, 0);
    };
    nest.entries = function(array) {
      return entries(map(d3.map, array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.set = function(array) {
    var set = new d3_Set();
    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
    return set;
  };
  function d3_Set() {
    this._ = Object.create(null);
  }
  d3_class(d3_Set, {
    has: d3_map_has,
    add: function(key) {
      this._[d3_map_escape(key += "")] = true;
      return key;
    },
    remove: d3_map_remove,
    values: d3_map_keys,
    size: d3_map_size,
    empty: d3_map_empty,
    forEach: function(f) {
      for (var key in this._) f.call(this, d3_map_unescape(key));
    }
  });
  d3.behavior = {};
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  function d3_vendorSymbol(object, name) {
    if (name in object) return name;
    name = name.charAt(0).toUpperCase() + name.slice(1);
    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
      var prefixName = d3_vendorPrefixes[i] + name;
      if (prefixName in object) return prefixName;
    }
  }
  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
  function d3_noop() {}
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i >= 0) {
      name = type.slice(i + 1);
      type = type.slice(0, i);
    }
    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
    if (arguments.length === 2) {
      if (listener == null) for (type in this) {
        if (this.hasOwnProperty(type)) this[type].on(name, null);
      }
      return this;
    }
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.event = null;
  function d3_eventPreventDefault() {
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  var d3_subclass = {}.__proto__ ? function(object, prototype) {
    object.__proto__ = prototype;
  } : function(object, prototype) {
    for (var property in prototype) object[property] = prototype[property];
  };
  function d3_selection(groups) {
    d3_subclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectMatcher = d3_documentElement.matches || d3_documentElement[d3_vendorSymbol(d3_documentElement, "matchesSelector")], d3_selectMatches = function(n, s) {
    return d3_selectMatcher.call(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = Sizzle;
    d3_selectMatches = Sizzle.matchesSelector;
  }
  d3.selection = function() {
    return d3_selectionRoot;
  };
  var d3_selectionPrototype = d3.selection.prototype = [];
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return typeof selector === "function" ? selector : function() {
      return d3_selectAll(selector, this);
    };
  }
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: "http://www.w3.org/1999/xhtml",
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0) {
        prefix = name.slice(0, i);
        name = name.slice(i + 1);
      }
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.getAttribute("class");
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classes(name) {
    return (name + "").trim().split(/^|\s+/);
  }
  function d3_selection_classed(name, value) {
    name = d3_selection_classes(name).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.getAttribute("class") || "";
      if (value) {
        re.lastIndex = 0;
        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
      } else {
        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name);
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3_selection_creator(name);
    return this.select(function() {
      return this.appendChild(name.apply(this, arguments));
    });
  };
  function d3_selection_creator(name) {
    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? function() {
      return this.ownerDocument.createElementNS(name.space, name.local);
    } : function() {
      return this.ownerDocument.createElementNS(this.namespaceURI, name);
    };
  }
  d3_selectionPrototype.insert = function(name, before) {
    name = d3_selection_creator(name);
    before = d3_selection_selector(before);
    return this.select(function() {
      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
    });
  };
  d3_selectionPrototype.remove = function() {
    return this.each(d3_selectionRemove);
  };
  function d3_selectionRemove() {
    var parent = this.parentNode;
    if (parent) parent.removeChild(this);
  }
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.has(keyValue = key.call(node = group[i], node.__data__, i))) {
            exitNodes[i] = node;
          } else {
            nodeByKeyValue.set(keyValue, node);
          }
          keyValues[i] = keyValue;
        }
        for (i = -1; ++i < m; ) {
          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          } else if (node !== true) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          }
          nodeByKeyValue.set(keyValue, true);
        }
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.get(keyValues[i]) !== true) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3_ascending;
    return function(a, b) {
      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
    };
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.size = function() {
    var n = 0;
    d3_selection_each(this, function() {
      ++n;
    });
    return n;
  };
  function d3_selection_enter(selection) {
    d3_subclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  d3_selection_enterPrototype.insert = function(name, before) {
    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
    return d3_selectionPrototype.insert.call(this, name, before);
  };
  function d3_selection_enterInsertBefore(enter) {
    var i0, j0;
    return function(d, i, j) {
      var group = enter[j].update, n = group.length, node;
      if (j != j0) j0 = j, i0 = 0;
      if (i >= i0) i0 = i + 1;
      while (!(node = group[i0]) && ++i0 < n) ;
      return node;
    };
  }
  d3.select = function(node) {
    var group = [ typeof node === "string" ? d3_select(node, d3_document) : node ];
    group.parentNode = d3_documentElement;
    return d3_selection([ group ]);
  };
  d3.selectAll = function(nodes) {
    var group = d3_array(typeof nodes === "string" ? d3_selectAll(nodes, d3_document) : nodes);
    group.parentNode = d3_documentElement;
    return d3_selection([ group ]);
  };
  var d3_selectionRoot = d3.select(d3_documentElement);
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
    if (i > 0) type = type.slice(0, i);
    var filter = d3_selection_onFilters.get(type);
    if (filter) type = filter, wrap = d3_selection_onFilter;
    function onRemove() {
      var l = this[name];
      if (l) {
        this.removeEventListener(type, l, l.$);
        delete this[name];
      }
    }
    function onAdd() {
      var l = wrap(listener, d3_array(arguments));
      onRemove.call(this);
      this.addEventListener(type, this[name] = l, l.$ = capture);
      l._ = listener;
    }
    function removeAll() {
      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
      for (var name in this) {
        if (match = name.match(re)) {
          var l = this[name];
          this.removeEventListener(match[1], l, l.$);
          delete this[name];
        }
      }
    }
    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
  }
  var d3_selection_onFilters = d3.map({
    mouseenter: "mouseover",
    mouseleave: "mouseout"
  });
  d3_selection_onFilters.forEach(function(k) {
    if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
  });
  function d3_selection_onListener(listener, argumentz) {
    return function(e) {
      var o = d3.event;
      d3.event = e;
      argumentz[0] = this.__data__;
      try {
        listener.apply(this, argumentz);
      } finally {
        d3.event = o;
      }
    };
  }
  function d3_selection_onFilter(listener, argumentz) {
    var l = d3_selection_onListener(listener, argumentz);
    return function(e) {
      var target = this, related = e.relatedTarget;
      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
        l.call(target, e);
      }
    };
  }
  var d3_event_dragSelect = "onselectstart" in d3_document ? null : d3_vendorSymbol(d3_documentElement.style, "userSelect"), d3_event_dragId = 0;
  function d3_event_dragSuppress() {
    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
    if (d3_event_dragSelect) {
      var style = d3_documentElement.style, select = style[d3_event_dragSelect];
      style[d3_event_dragSelect] = "none";
    }
    return function(suppressClick) {
      w.on(name, null);
      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
      if (suppressClick) {
        var off = function() {
          w.on(click, null);
        };
        w.on(click, function() {
          d3_eventPreventDefault();
          off();
        }, true);
        setTimeout(off, 0);
      }
    };
  }
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    if (e.changedTouches) e = e.changedTouches[0];
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) {
        svg = d3.select("body").append("svg").style({
          position: "absolute",
          top: 0,
          left: 0,
          margin: 0,
          padding: 0,
          border: "none"
        }, "important");
        var ctm = svg[0][0].getScreenCTM();
        d3_mouse_bug44083 = !(ctm.f || ctm.e);
        svg.remove();
      }
      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX,
      point.y = e.clientY;
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touch = function(container, touches, identifier) {
    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
      if ((touch = touches[i]).identifier === identifier) {
        return d3_mousePoint(container, touch);
      }
    }
  };
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_behavior_dragMouseSubject, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_behavior_dragTouchSubject, "touchmove", "touchend");
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
    }
    function dragstart(id, position, subject, move, end) {
      return function() {
        var that = this, target = d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject()).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(), position0 = position(parent, dragId);
        if (origin) {
          dragOffset = origin.apply(that, arguments);
          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
        } else {
          dragOffset = [ 0, 0 ];
        }
        dispatch({
          type: "dragstart"
        });
        function moved() {
          var position1 = position(parent, dragId), dx, dy;
          if (!position1) return;
          dx = position1[0] - position0[0];
          dy = position1[1] - position0[1];
          dragged |= dx | dy;
          position0 = position1;
          dispatch({
            type: "drag",
            x: position1[0] + dragOffset[0],
            y: position1[1] + dragOffset[1],
            dx: dx,
            dy: dy
          });
        }
        function ended() {
          if (!position(parent, dragId)) return;
          dragSubject.on(move + dragName, null).on(end + dragName, null);
          dragRestore(dragged && d3.event.target === target);
          dispatch({
            type: "dragend"
          });
        }
      };
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  function d3_behavior_dragTouchId() {
    return d3.event.changedTouches[0].identifier;
  }
  function d3_behavior_dragTouchSubject() {
    return d3.event.target;
  }
  function d3_behavior_dragMouseSubject() {
    return d3_window;
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
  function d3_sgn(x) {
    return x > 0 ? 1 : x < 0 ? -1 : 0;
  }
  function d3_cross2d(a, b, c) {
    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
  }
  function d3_acos(x) {
    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
  }
  function d3_asin(x) {
    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
  }
  function d3_sinh(x) {
    return ((x = Math.exp(x)) - 1 / x) / 2;
  }
  function d3_cosh(x) {
    return ((x = Math.exp(x)) + 1 / x) / 2;
  }
  function d3_tanh(x) {
    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
  }
  function d3_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
  d3.interpolateZoom = function(p0, p1) {
    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2];
    var dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), dr = r1 - r0, S = (dr || Math.log(w1 / w0)) / ρ;
    function interpolate(t) {
      var s = t * S;
      if (dr) {
        var coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
      }
      return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * s) ];
    }
    interpolate.duration = S * 1e3;
    return interpolate;
  };
  d3.behavior.zoom = function() {
    var view = {
      x: 0,
      y: 0,
      k: 1
    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
    function zoom(g) {
      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
    }
    zoom.event = function(g) {
      g.each(function() {
        var dispatch = event.of(this, arguments), view1 = view;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.zoom", function() {
            view = this.__chart__ || {
              x: 0,
              y: 0,
              k: 1
            };
            zoomstarted(dispatch);
          }).tween("zoom:zoom", function() {
            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
            return function(t) {
              var l = i(t), k = dx / l[2];
              this.__chart__ = view = {
                x: cx - l[0] * k,
                y: cy - l[1] * k,
                k: k
              };
              zoomed(dispatch);
            };
          }).each("interrupt.zoom", function() {
            zoomended(dispatch);
          }).each("end.zoom", function() {
            zoomended(dispatch);
          });
        } else {
          this.__chart__ = view;
          zoomstarted(dispatch);
          zoomed(dispatch);
          zoomended(dispatch);
        }
      });
    };
    zoom.translate = function(_) {
      if (!arguments.length) return [ view.x, view.y ];
      view = {
        x: +_[0],
        y: +_[1],
        k: view.k
      };
      rescale();
      return zoom;
    };
    zoom.scale = function(_) {
      if (!arguments.length) return view.k;
      view = {
        x: view.x,
        y: view.y,
        k: +_
      };
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(_) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.center = function(_) {
      if (!arguments.length) return center;
      center = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.size = function(_) {
      if (!arguments.length) return size;
      size = _ && [ +_[0], +_[1] ];
      return zoom;
    };
    zoom.duration = function(_) {
      if (!arguments.length) return duration;
      duration = +_;
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      view = {
        x: 0,
        y: 0,
        k: 1
      };
      return zoom;
    };
    function location(p) {
      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
    }
    function point(l) {
      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
    }
    function scaleTo(s) {
      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      view.x += p[0] - l[0];
      view.y += p[1] - l[1];
    }
    function zoomTo(that, p, l, k) {
      that.__chart__ = {
        x: view.x,
        y: view.y,
        k: view.k
      };
      scaleTo(Math.pow(2, k));
      translateTo(center0 = p, l);
      that = d3.select(that);
      if (duration > 0) that = that.transition().duration(duration);
      that.call(zoom.event);
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - view.x) / view.k;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - view.y) / view.k;
      }).map(y0.invert));
    }
    function zoomstarted(dispatch) {
      if (!zooming++) dispatch({
        type: "zoomstart"
      });
    }
    function zoomed(dispatch) {
      rescale();
      dispatch({
        type: "zoom",
        scale: view.k,
        translate: [ view.x, view.y ]
      });
    }
    function zoomended(dispatch) {
      if (!--zooming) dispatch({
        type: "zoomend"
      });
      center0 = null;
    }
    function mousedowned() {
      var that = this, target = d3.event.target, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress();
      d3_selection_interrupt.call(that);
      zoomstarted(dispatch);
      function moved() {
        dragged = 1;
        translateTo(d3.mouse(that), location0);
        zoomed(dispatch);
      }
      function ended() {
        subject.on(mousemove, null).on(mouseup, null);
        dragRestore(dragged && d3.event.target === target);
        zoomended(dispatch);
      }
    }
    function touchstarted() {
      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress();
      started();
      zoomstarted(dispatch);
      subject.on(mousedown, null).on(touchstart, started);
      function relocate() {
        var touches = d3.touches(that);
        scale0 = view.k;
        touches.forEach(function(t) {
          if (t.identifier in locations0) locations0[t.identifier] = location(t);
        });
        return touches;
      }
      function started() {
        var target = d3.event.target;
        d3.select(target).on(touchmove, moved).on(touchend, ended);
        targets.push(target);
        var changed = d3.event.changedTouches;
        for (var i = 0, n = changed.length; i < n; ++i) {
          locations0[changed[i].identifier] = null;
        }
        var touches = relocate(), now = Date.now();
        if (touches.length === 1) {
          if (now - touchtime < 500) {
            var p = touches[0];
            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
            d3_eventPreventDefault();
          }
          touchtime = now;
        } else if (touches.length > 1) {
          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
          distance0 = dx * dx + dy * dy;
        }
      }
      function moved() {
        var touches = d3.touches(that), p0, l0, p1, l1;
        d3_selection_interrupt.call(that);
        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
          p1 = touches[i];
          if (l1 = locations0[p1.identifier]) {
            if (l0) break;
            p0 = p1, l0 = l1;
          }
        }
        if (l1) {
          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
          scaleTo(scale1 * scale0);
        }
        touchtime = null;
        translateTo(p0, l0);
        zoomed(dispatch);
      }
      function ended() {
        if (d3.event.touches.length) {
          var changed = d3.event.changedTouches;
          for (var i = 0, n = changed.length; i < n; ++i) {
            delete locations0[changed[i].identifier];
          }
          for (var identifier in locations0) {
            return void relocate();
          }
        }
        d3.selectAll(targets).on(zoomName, null);
        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
        dragRestore();
        zoomended(dispatch);
      }
    }
    function mousewheeled() {
      var dispatch = event.of(this, arguments);
      if (mousewheelTimer) clearTimeout(mousewheelTimer); else translate0 = location(center0 = center || d3.mouse(this)),
      d3_selection_interrupt.call(this), zoomstarted(dispatch);
      mousewheelTimer = setTimeout(function() {
        mousewheelTimer = null;
        zoomended(dispatch);
      }, 50);
      d3_eventPreventDefault();
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
      translateTo(center0, translate0);
      zoomed(dispatch);
    }
    function dblclicked() {
      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ];
  var d3_behavior_zoomDelta, d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
    return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
  }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
    return d3.event.wheelDelta;
  }, "mousewheel") : (d3_behavior_zoomDelta = function() {
    return -d3.event.detail;
  }, "MozMousePixelScroll");
  d3.color = d3_color;
  function d3_color() {}
  d3_color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.hsl = d3_hsl;
  function d3_hsl(h, s, l) {
    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
  }
  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = d3_hcl;
  function d3_hcl(h, c, l) {
    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
  }
  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
  d3_hclPrototype.brighter = function(k) {
    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    if (isNaN(h)) h = 0;
    if (isNaN(c)) c = 0;
    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = d3_lab;
  function d3_lab(l, a, b) {
    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_lab.prototype = new d3_color();
  d3_labPrototype.brighter = function(k) {
    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  d3.rgb = d3_rgb;
  function d3_rgb(r, g, b) {
    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
  }
  function d3_rgbNumber(value) {
    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
  }
  function d3_rgbString(value) {
    return d3_rgbNumber(value) + "";
  }
  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return new d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return new d3_rgb(k * this.r, k * this.g, k * this.b);
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, color;
    m1 = /([a-z]+)\((.*)\)/i.exec(format);
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (color = d3_rgb_names.get(format)) return rgb(color.r, color.g, color.b);
    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
      if (format.length === 4) {
        r = (color & 3840) >> 4;
        r = r >> 4 | r;
        g = color & 240;
        g = g >> 4 | g;
        b = color & 15;
        b = b << 4 | b;
      } else if (format.length === 7) {
        r = (color & 16711680) >> 16;
        g = (color & 65280) >> 8;
        b = color & 255;
      }
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      h = NaN;
      s = l > 0 && l < 1 ? 0 : h;
    }
    return new d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: 15792383,
    antiquewhite: 16444375,
    aqua: 65535,
    aquamarine: 8388564,
    azure: 15794175,
    beige: 16119260,
    bisque: 16770244,
    black: 0,
    blanchedalmond: 16772045,
    blue: 255,
    blueviolet: 9055202,
    brown: 10824234,
    burlywood: 14596231,
    cadetblue: 6266528,
    chartreuse: 8388352,
    chocolate: 13789470,
    coral: 16744272,
    cornflowerblue: 6591981,
    cornsilk: 16775388,
    crimson: 14423100,
    cyan: 65535,
    darkblue: 139,
    darkcyan: 35723,
    darkgoldenrod: 12092939,
    darkgray: 11119017,
    darkgreen: 25600,
    darkgrey: 11119017,
    darkkhaki: 12433259,
    darkmagenta: 9109643,
    darkolivegreen: 5597999,
    darkorange: 16747520,
    darkorchid: 10040012,
    darkred: 9109504,
    darksalmon: 15308410,
    darkseagreen: 9419919,
    darkslateblue: 4734347,
    darkslategray: 3100495,
    darkslategrey: 3100495,
    darkturquoise: 52945,
    darkviolet: 9699539,
    deeppink: 16716947,
    deepskyblue: 49151,
    dimgray: 6908265,
    dimgrey: 6908265,
    dodgerblue: 2003199,
    firebrick: 11674146,
    floralwhite: 16775920,
    forestgreen: 2263842,
    fuchsia: 16711935,
    gainsboro: 14474460,
    ghostwhite: 16316671,
    gold: 16766720,
    goldenrod: 14329120,
    gray: 8421504,
    green: 32768,
    greenyellow: 11403055,
    grey: 8421504,
    honeydew: 15794160,
    hotpink: 16738740,
    indianred: 13458524,
    indigo: 4915330,
    ivory: 16777200,
    khaki: 15787660,
    lavender: 15132410,
    lavenderblush: 16773365,
    lawngreen: 8190976,
    lemonchiffon: 16775885,
    lightblue: 11393254,
    lightcoral: 15761536,
    lightcyan: 14745599,
    lightgoldenrodyellow: 16448210,
    lightgray: 13882323,
    lightgreen: 9498256,
    lightgrey: 13882323,
    lightpink: 16758465,
    lightsalmon: 16752762,
    lightseagreen: 2142890,
    lightskyblue: 8900346,
    lightslategray: 7833753,
    lightslategrey: 7833753,
    lightsteelblue: 11584734,
    lightyellow: 16777184,
    lime: 65280,
    limegreen: 3329330,
    linen: 16445670,
    magenta: 16711935,
    maroon: 8388608,
    mediumaquamarine: 6737322,
    mediumblue: 205,
    mediumorchid: 12211667,
    mediumpurple: 9662683,
    mediumseagreen: 3978097,
    mediumslateblue: 8087790,
    mediumspringgreen: 64154,
    mediumturquoise: 4772300,
    mediumvioletred: 13047173,
    midnightblue: 1644912,
    mintcream: 16121850,
    mistyrose: 16770273,
    moccasin: 16770229,
    navajowhite: 16768685,
    navy: 128,
    oldlace: 16643558,
    olive: 8421376,
    olivedrab: 7048739,
    orange: 16753920,
    orangered: 16729344,
    orchid: 14315734,
    palegoldenrod: 15657130,
    palegreen: 10025880,
    paleturquoise: 11529966,
    palevioletred: 14381203,
    papayawhip: 16773077,
    peachpuff: 16767673,
    peru: 13468991,
    pink: 16761035,
    plum: 14524637,
    powderblue: 11591910,
    purple: 8388736,
    red: 16711680,
    rosybrown: 12357519,
    royalblue: 4286945,
    saddlebrown: 9127187,
    salmon: 16416882,
    sandybrown: 16032864,
    seagreen: 3050327,
    seashell: 16774638,
    sienna: 10506797,
    silver: 12632256,
    skyblue: 8900331,
    slateblue: 6970061,
    slategray: 7372944,
    slategrey: 7372944,
    snow: 16775930,
    springgreen: 65407,
    steelblue: 4620980,
    tan: 13808780,
    teal: 32896,
    thistle: 14204888,
    tomato: 16737095,
    turquoise: 4251856,
    violet: 15631086,
    wheat: 16113331,
    white: 16777215,
    whitesmoke: 16119285,
    yellow: 16776960,
    yellowgreen: 10145074
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgbNumber(value));
  });
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  function d3_identity(d) {
    return d;
  }
  d3.xhr = d3_xhrType(d3_identity);
  function d3_xhrType(response) {
    return function(url, mimeType, callback) {
      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType,
      mimeType = null;
      return d3_xhr(url, mimeType, response, callback);
    };
  }
  function d3_xhr(url, mimeType, response, callback) {
    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
    if (d3_window.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var status = request.status, result;
      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
        try {
          result = response.call(xhr, request);
        } catch (e) {
          dispatch.error.call(xhr, e);
          return;
        }
        dispatch.load.call(xhr, result);
      } else {
        dispatch.error.call(xhr, request);
      }
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.responseType = function(value) {
      if (!arguments.length) return responseType;
      responseType = value;
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (responseType != null) request.responseType = responseType;
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      dispatch.beforesend.call(xhr, request);
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  }
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  function d3_xhrHasResponse(request) {
    var type = request.responseType;
    return type && type !== "text" ? request.response : request.responseText;
  }
  d3.dsv = function(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, row, callback) {
      if (arguments.length < 3) callback = row, row = null;
      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
      xhr.row = function(_) {
        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
      };
      return xhr;
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    function typedResponse(f) {
      return function(request) {
        return dsv.parse(request.responseText, f);
      };
    }
    dsv.parse = function(text, f) {
      var o;
      return dsv.parseRows(text, function(row, i) {
        if (o) return o(row, i - 1);
        var a = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
        o = f ? function(row, i) {
          return f(a(row), i);
        } : a;
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.slice(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.slice(j, I - k);
        }
        return text.slice(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && (a = f(a, n++)) == null) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
      var fieldSet = new d3_Set(), fields = [];
      rows.forEach(function(row) {
        for (var field in row) {
          if (!fieldSet.has(field)) {
            fields.push(fieldSet.add(field));
          }
        }
      });
      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
        return fields.map(function(field) {
          return formatValue(row[field]);
        }).join(delimiter);
      })).join("\n");
    };
    dsv.formatRows = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  };
  d3.csv = d3.dsv(",", "text/csv");
  d3.tsv = d3.dsv("	", "text/tab-separated-values");
  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_active, d3_timer_frame = d3_window[d3_vendorSymbol(d3_window, "requestAnimationFrame")] || function(callback) {
    setTimeout(callback, 17);
  };
  d3.timer = function(callback, delay, then) {
    var n = arguments.length;
    if (n < 2) delay = 0;
    if (n < 3) then = Date.now();
    var time = then + delay, timer = {
      c: callback,
      t: time,
      f: false,
      n: null
    };
    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
    d3_timer_queueTail = timer;
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  };
  function d3_timer_step() {
    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    d3_timer_mark();
    d3_timer_sweep();
  };
  function d3_timer_mark() {
    var now = Date.now();
    d3_timer_active = d3_timer_queueHead;
    while (d3_timer_active) {
      if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t);
      d3_timer_active = d3_timer_active.n;
    }
    return now;
  }
  function d3_timer_sweep() {
    var t0, t1 = d3_timer_queueHead, time = Infinity;
    while (t1) {
      if (t1.f) {
        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
      } else {
        if (t1.t < time) time = t1.t;
        t1 = (t0 = t1).n;
      }
    }
    d3_timer_queueTail = t0;
    return time;
  }
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  function d3_locale_numberFormat(locale) {
    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
      while (i > 0 && g > 0) {
        if (length + g + 1 > width) g = Math.max(1, width - length);
        t.push(value.substring(i -= g, i + g));
        if ((length += g + 1) > width) break;
        g = locale_grouping[j = (j + 1) % locale_grouping.length];
      }
      return t.reverse().join(locale_thousands);
    } : d3_identity;
    return function(specifier) {
      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
      if (precision) precision = +precision.substring(1);
      if (zfill || fill === "0" && align === "=") {
        zfill = fill = "0";
        align = "=";
      }
      switch (type) {
       case "n":
        comma = true;
        type = "g";
        break;

       case "%":
        scale = 100;
        suffix = "%";
        type = "f";
        break;

       case "p":
        scale = 100;
        suffix = "%";
        type = "r";
        break;

       case "b":
       case "o":
       case "x":
       case "X":
        if (symbol === "#") prefix = "0" + type.toLowerCase();

       case "c":
        exponent = false;

       case "d":
        integer = true;
        precision = 0;
        break;

       case "s":
        scale = -1;
        type = "r";
        break;
      }
      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
      if (type == "r" && !precision) type = "g";
      if (precision != null) {
        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
      }
      type = d3_format_types.get(type) || d3_format_typeDefault;
      var zcomma = zfill && comma;
      return function(value) {
        var fullSuffix = suffix;
        if (integer && value % 1) return "";
        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
        if (scale < 0) {
          var unit = d3.formatPrefix(value, precision);
          value = unit.scale(value);
          fullSuffix = unit.symbol + suffix;
        } else {
          value *= scale;
        }
        value = type(value, precision);
        var i = value.lastIndexOf("."), before, after;
        if (i < 0) {
          var j = exponent ? value.lastIndexOf("e") : -1;
          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
        } else {
          before = value.substring(0, i);
          after = locale_decimal + value.substring(i + 1);
        }
        if (!zfill && comma) before = formatGroup(before, Infinity);
        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
        negative += prefix;
        value = before + after;
        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
      };
    };
  }
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_time = d3.time = {}, d3_date = Date;
  function d3_date_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_date_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_date(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_date(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_date = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_date = d3_date_utc;
        var utc = new d3_date_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_date = Date;
      }
    };
  }
  d3_time.year = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3_time.years = d3_time.year.range;
  d3_time.years.utc = d3_time.year.utc.range;
  d3_time.day = d3_time_interval(function(date) {
    var day = new d3_date(2e3, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3_time.days = d3_time.day.range;
  d3_time.days.utc = d3_time.day.utc.range;
  d3_time.dayOfYear = function(date) {
    var year = d3_time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
    i = 7 - i;
    var interval = d3_time[day] = d3_time_interval(function(date) {
      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3_time[day + "s"] = interval.range;
    d3_time[day + "s"].utc = interval.utc.range;
    d3_time[day + "OfYear"] = function(date) {
      var day = d3_time.year(date).getDay();
      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3_time.week = d3_time.sunday;
  d3_time.weeks = d3_time.sunday.range;
  d3_time.weeks.utc = d3_time.sunday.utc.range;
  d3_time.weekOfYear = d3_time.sundayOfYear;
  function d3_locale_timeFormat(locale) {
    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
    function d3_time_format(template) {
      var n = template.length;
      function format(date) {
        var string = [], i = -1, j = 0, c, p, f;
        while (++i < n) {
          if (template.charCodeAt(i) === 37) {
            string.push(template.slice(j, i));
            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
            string.push(c);
            j = i + 1;
          }
        }
        string.push(template.slice(j, i));
        return string.join("");
      }
      format.parse = function(string) {
        var d = {
          y: 1900,
          m: 0,
          d: 1,
          H: 0,
          M: 0,
          S: 0,
          L: 0,
          Z: null
        }, i = d3_time_parse(d, template, string, 0);
        if (i != string.length) return null;
        if ("p" in d) d.H = d.H % 12 + d.p * 12;
        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("w" in d && ("W" in d || "U" in d)) {
          date.setFullYear(d.y, 0, 1);
          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
        } else date.setFullYear(d.y, d.m, d.d);
        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
        return localZ ? date._ : date;
      };
      format.toString = function() {
        return template;
      };
      return format;
    }
    function d3_time_parse(date, template, string, j) {
      var c, p, t, i = 0, n = template.length, m = string.length;
      while (i < n) {
        if (j >= m) return -1;
        c = template.charCodeAt(i++);
        if (c === 37) {
          t = template.charAt(i++);
          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
          if (!p || (j = p(date, string, j)) < 0) return -1;
        } else if (c != string.charCodeAt(j++)) {
          return -1;
        }
      }
      return j;
    }
    d3_time_format.utc = function(template) {
      var local = d3_time_format(template);
      function format(date) {
        try {
          d3_date = d3_date_utc;
          var utc = new d3_date();
          utc._ = date;
          return local(utc);
        } finally {
          d3_date = Date;
        }
      }
      format.parse = function(string) {
        try {
          d3_date = d3_date_utc;
          var date = local.parse(string);
          return date && date._;
        } finally {
          d3_date = Date;
        }
      };
      format.toString = local.toString;
      return format;
    };
    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
    locale_periods.forEach(function(p, i) {
      d3_time_periodLookup.set(p.toLowerCase(), i);
    });
    var d3_time_formats = {
      a: function(d) {
        return locale_shortDays[d.getDay()];
      },
      A: function(d) {
        return locale_days[d.getDay()];
      },
      b: function(d) {
        return locale_shortMonths[d.getMonth()];
      },
      B: function(d) {
        return locale_months[d.getMonth()];
      },
      c: d3_time_format(locale_dateTime),
      d: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      e: function(d, p) {
        return d3_time_formatPad(d.getDate(), p, 2);
      },
      H: function(d, p) {
        return d3_time_formatPad(d.getHours(), p, 2);
      },
      I: function(d, p) {
        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
      },
      j: function(d, p) {
        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
      },
      L: function(d, p) {
        return d3_time_formatPad(d.getMilliseconds(), p, 3);
      },
      m: function(d, p) {
        return d3_time_formatPad(d.getMonth() + 1, p, 2);
      },
      M: function(d, p) {
        return d3_time_formatPad(d.getMinutes(), p, 2);
      },
      p: function(d) {
        return locale_periods[+(d.getHours() >= 12)];
      },
      S: function(d, p) {
        return d3_time_formatPad(d.getSeconds(), p, 2);
      },
      U: function(d, p) {
        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
      },
      w: function(d) {
        return d.getDay();
      },
      W: function(d, p) {
        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
      },
      x: d3_time_format(locale_date),
      X: d3_time_format(locale_time),
      y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
      },
      Y: function(d, p) {
        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
      },
      Z: d3_time_zone,
      "%": function() {
        return "%";
      }
    };
    var d3_time_parsers = {
      a: d3_time_parseWeekdayAbbrev,
      A: d3_time_parseWeekday,
      b: d3_time_parseMonthAbbrev,
      B: d3_time_parseMonth,
      c: d3_time_parseLocaleFull,
      d: d3_time_parseDay,
      e: d3_time_parseDay,
      H: d3_time_parseHour24,
      I: d3_time_parseHour24,
      j: d3_time_parseDayOfYear,
      L: d3_time_parseMilliseconds,
      m: d3_time_parseMonthNumber,
      M: d3_time_parseMinutes,
      p: d3_time_parseAmPm,
      S: d3_time_parseSeconds,
      U: d3_time_parseWeekNumberSunday,
      w: d3_time_parseWeekdayNumber,
      W: d3_time_parseWeekNumberMonday,
      x: d3_time_parseLocaleDate,
      X: d3_time_parseLocaleTime,
      y: d3_time_parseYear,
      Y: d3_time_parseFullYear,
      Z: d3_time_parseZone,
      "%": d3_time_parseLiteralPercent
    };
    function d3_time_parseWeekdayAbbrev(date, string, i) {
      d3_time_dayAbbrevRe.lastIndex = 0;
      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseWeekday(date, string, i) {
      d3_time_dayRe.lastIndex = 0;
      var n = d3_time_dayRe.exec(string.slice(i));
      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonthAbbrev(date, string, i) {
      d3_time_monthAbbrevRe.lastIndex = 0;
      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseMonth(date, string, i) {
      d3_time_monthRe.lastIndex = 0;
      var n = d3_time_monthRe.exec(string.slice(i));
      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
    }
    function d3_time_parseLocaleFull(date, string, i) {
      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
    }
    function d3_time_parseLocaleDate(date, string, i) {
      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
    }
    function d3_time_parseLocaleTime(date, string, i) {
      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
    }
    function d3_time_parseAmPm(date, string, i) {
      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
      return n == null ? -1 : (date.p = n, i);
    }
    return d3_time_format;
  }
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
  function d3_time_formatPad(value, fill, width) {
    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_parseWeekdayNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
    return n ? (date.w = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberSunday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.U = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseWeekNumberMonday(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i));
    return n ? (date.W = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
    return n ? (date.y = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
  }
  function d3_time_parseZone(date, string, i) {
    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string,
    i + 5) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.d = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseDayOfYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.j = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.H = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.M = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
    return n ? (date.S = +n[0], i + n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
    return n ? (date.L = +n[0], i + n[0].length) : -1;
  }
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  function d3_time_parseLiteralPercent(date, string, i) {
    d3_time_percentRe.lastIndex = 0;
    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
    return n ? i + n[0].length : -1;
  }
  function d3_time_formatMulti(formats) {
    var n = formats.length, i = -1;
    while (++i < n) formats[i][0] = this(formats[i][0]);
    return function(date) {
      var i = 0, f = formats[i];
      while (!f[1](date)) f = formats[++i];
      return f[0](date);
    };
  }
  d3.locale = function(locale) {
    return {
      numberFormat: d3_locale_numberFormat(locale),
      timeFormat: d3_locale_timeFormat(locale)
    };
  };
  var d3_locale_enUS = d3.locale({
    decimal: ".",
    thousands: ",",
    grouping: [ 3 ],
    currency: [ "$", "" ],
    dateTime: "%a %b %e %X %Y",
    date: "%m/%d/%Y",
    time: "%H:%M:%S",
    periods: [ "AM", "PM" ],
    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
  });
  d3.format = d3_locale_enUS.numberFormat;
  d3.geo = {};
  function d3_adder() {}
  d3_adder.prototype = {
    s: 0,
    t: 0,
    add: function(y) {
      d3_adderSum(y, this.t, d3_adderTemp);
      d3_adderSum(d3_adderTemp.s, this.s, this);
      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
    },
    reset: function() {
      this.s = this.t = 0;
    },
    valueOf: function() {
      return this.s;
    }
  };
  var d3_adderTemp = new d3_adder();
  function d3_adderSum(a, b, o) {
    var x = o.s = a + b, bv = x - a, av = x - bv;
    o.t = a - av + (b - bv);
  }
  d3.geo.stream = function(object, listener) {
    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      object = object.coordinates;
      listener.point(object[0], object[1], object[2]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingSum.reset();
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * d3_geo_areaRingSum;
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4),
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
      d3_geo_areaRingSum.add(Math.atan2(v, u));
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
  }
  d3.geo.bounds = function() {
    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
    var bound = {
      point: point,
      lineStart: lineStart,
      lineEnd: lineEnd,
      polygonStart: function() {
        bound.point = ringPoint;
        bound.lineStart = ringStart;
        bound.lineEnd = ringEnd;
        dλSum = 0;
        d3_geo_area.polygonStart();
      },
      polygonEnd: function() {
        d3_geo_area.polygonEnd();
        bound.point = point;
        bound.lineStart = lineStart;
        bound.lineEnd = lineEnd;
        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
        range[0] = λ0, range[1] = λ1;
      }
    };
    function point(λ, φ) {
      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
      if (φ < φ0) φ0 = φ;
      if (φ > φ1) φ1 = φ;
    }
    function linePoint(λ, φ) {
      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
      if (p0) {
        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
        d3_geo_cartesianNormalize(inflection);
        inflection = d3_geo_spherical(inflection);
        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = inflection[1] * d3_degrees;
          if (φi > φ1) φ1 = φi;
        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
          var φi = -inflection[1] * d3_degrees;
          if (φi < φ0) φ0 = φi;
        } else {
          if (φ < φ0) φ0 = φ;
          if (φ > φ1) φ1 = φ;
        }
        if (antimeridian) {
          if (λ < λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        } else {
          if (λ1 >= λ0) {
            if (λ < λ0) λ0 = λ;
            if (λ > λ1) λ1 = λ;
          } else {
            if (λ > λ_) {
              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
            } else {
              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
            }
          }
        }
      } else {
        point(λ, φ);
      }
      p0 = p, λ_ = λ;
    }
    function lineStart() {
      bound.point = linePoint;
    }
    function lineEnd() {
      range[0] = λ0, range[1] = λ1;
      bound.point = point;
      p0 = null;
    }
    function ringPoint(λ, φ) {
      if (p0) {
        var dλ = λ - λ_;
        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
      } else λ__ = λ, φ__ = φ;
      d3_geo_area.point(λ, φ);
      linePoint(λ, φ);
    }
    function ringStart() {
      d3_geo_area.lineStart();
    }
    function ringEnd() {
      ringPoint(λ__, φ__);
      d3_geo_area.lineEnd();
      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
      range[0] = λ0, range[1] = λ1;
      p0 = null;
    }
    function angle(λ0, λ1) {
      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
    }
    function compareRanges(a, b) {
      return a[0] - b[0];
    }
    function withinRange(x, range) {
      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
    }
    return function(feature) {
      φ1 = λ1 = -(λ0 = φ0 = Infinity);
      ranges = [];
      d3.geo.stream(feature, bound);
      var n = ranges.length;
      if (n) {
        ranges.sort(compareRanges);
        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
          b = ranges[i];
          if (withinRange(b[0], a) || withinRange(b[1], a)) {
            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
          } else {
            merged.push(a = b);
          }
        }
        var best = -Infinity, dλ;
        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
          b = merged[i];
          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
        }
      }
      ranges = range = null;
      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
    };
  }();
  d3.geo.centroid = function(object) {
    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
    if (m < ε2) {
      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
      m = x * x + y * y + z * z;
      if (m < ε2) return [ NaN, NaN ];
    }
    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
  };
  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
  var d3_geo_centroid = {
    sphere: d3_noop,
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
  }
  function d3_geo_centroidPointXYZ(x, y, z) {
    ++d3_geo_centroidW0;
    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00, x0, y0, z0;
    d3_geo_centroid.point = function(λ, φ) {
      λ00 = λ, φ00 = φ;
      d3_geo_centroid.point = nextPoint;
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroidPointXYZ(x0, y0, z0);
    };
    d3_geo_centroid.lineEnd = function() {
      nextPoint(λ00, φ00);
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
      d3_geo_centroid.point = d3_geo_centroidPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
      d3_geo_centroidX2 += v * cx;
      d3_geo_centroidY2 += v * cy;
      d3_geo_centroidZ2 += v * cz;
      d3_geo_centroidW1 += w;
      d3_geo_centroidX1 += w * (x0 + (x0 = x));
      d3_geo_centroidY1 += w * (y0 + (y0 = y));
      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
      d3_geo_centroidPointXYZ(x0, y0, z0);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_true() {
    return true;
  }
  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length - 1) <= 0) return;
      var n, p0 = segment[0], p1 = segment[n];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
      a.o = b;
      subject.push(a);
      clip.push(b);
      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
      a.o = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(compare);
    d3_geo_clipPolygonLinkCircular(subject);
    d3_geo_clipPolygonLinkCircular(clip);
    if (!subject.length) return;
    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
      clip[i].e = entry = !entry;
    }
    var start = subject[0], points, point;
    while (1) {
      var current = start, isSubject = true;
      while (current.v) if ((current = current.n) === start) return;
      points = current.z;
      listener.lineStart();
      do {
        current.v = current.o.v = true;
        if (current.e) {
          if (isSubject) {
            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.n.x, 1, listener);
          }
          current = current.n;
        } else {
          if (isSubject) {
            points = current.p.z;
            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.x, current.p.x, -1, listener);
          }
          current = current.p;
        }
        current = current.o;
        points = current.z;
        isSubject = !isSubject;
      } while (!current.v);
      listener.lineEnd();
    }
  }
  function d3_geo_clipPolygonLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.n = b = array[i];
      b.p = a;
      a = b;
    }
    a.n = b = array[0];
    b.p = a;
  }
  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
    this.x = point;
    this.z = points;
    this.o = other;
    this.e = entry;
    this.v = false;
    this.n = this.p = null;
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
    return function(rotate, listener) {
      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          segments = [];
          polygon = [];
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
          if (segments.length) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
          } else if (clipStartInside) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
          segments = polygon = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        var point = rotate(λ, φ);
        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        var point = rotate(λ, φ);
        line.point(point[0], point[1]);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
      function pointRing(λ, φ) {
        ring.push([ λ, φ ]);
        var point = rotate(λ, φ);
        ringListener.point(point[0], point[1]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        ring.pop();
        polygon.push(ring);
        ring = null;
        if (!n) return;
        if (clean & 1) {
          segment = ringSegments[0];
          var n = segment.length - 1, i = -1, point;
          if (n > 0) {
            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
            listener.lineStart();
            while (++i < n) listener.point((point = segment[i])[0], point[1]);
            listener.lineEnd();
          }
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      },
      rejoin: function() {
        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
      }
    };
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
        if (abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * halfπ;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (abs(from[0] - to[0]) > ε) {
      var s = from[0] < to[0] ? π : -π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_pointInPolygon(point, polygon) {
    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
    d3_geo_areaRingSum.reset();
    for (var i = 0, n = polygon.length; i < n; ++i) {
      var ring = polygon[i], m = ring.length;
      if (!m) continue;
      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
      while (true) {
        if (j === m) j = 0;
        point = ring[j];
        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
          d3_geo_cartesianNormalize(arc);
          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
          d3_geo_cartesianNormalize(intersection);
          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
          }
        }
        if (!j++) break;
        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
      }
    }
    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
  }
  function d3_geo_clipCircle(radius) {
    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, c0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          } else if (notHemisphere && point0 && smallRadius ^ v) {
            var t;
            if (!(c & c0) && (t = intersect(point1, point0, true))) {
              clean = 0;
              if (smallRadius) {
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
              } else {
                listener.point(t[1][0], t[1][1]);
                listener.lineEnd();
                listener.lineStart();
                listener.point(t[0][0], t[0][1]);
              }
            }
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
            listener.point(point1[0], point1[1]);
          }
          point0 = point1, v0 = v, c0 = c;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b, two) {
      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return !two && a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
      if (t2 < 0) return;
      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      q = d3_geo_spherical(q);
      if (!two) return q;
      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
        d3_geo_cartesianAdd(q1, A);
        return [ q, d3_geo_spherical(q1) ];
      }
    }
    function code(λ, φ) {
      var r = smallRadius ? radius : π - radius, code = 0;
      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
      return code;
    }
  }
  function d3_geom_clipLine(x0, y0, x1, y1) {
    return function(line) {
      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
      r = x0 - ax;
      if (!dx && r > 0) return;
      r /= dx;
      if (dx < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dx > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = x1 - ax;
      if (!dx && r < 0) return;
      r /= dx;
      if (dx < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dx > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      r = y0 - ay;
      if (!dy && r > 0) return;
      r /= dy;
      if (dy < 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      } else if (dy > 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      }
      r = y1 - ay;
      if (!dy && r < 0) return;
      r /= dy;
      if (dy < 0) {
        if (r > t1) return;
        if (r > t0) t0 = r;
      } else if (dy > 0) {
        if (r < t0) return;
        if (r < t1) t1 = r;
      }
      if (t0 > 0) line.a = {
        x: ax + t0 * dx,
        y: ay + t0 * dy
      };
      if (t1 < 1) line.b = {
        x: ax + t1 * dx,
        y: ay + t1 * dy
      };
      return line;
    };
  }
  var d3_geo_clipExtentMAX = 1e9;
  d3.geo.clipExtent = function() {
    var x0, y0, x1, y1, stream, clip, clipExtent = {
      stream: function(output) {
        if (stream) stream.valid = false;
        stream = clip(output);
        stream.valid = true;
        return stream;
      },
      extent: function(_) {
        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
        if (stream) stream.valid = false, stream = null;
        return clipExtent;
      }
    };
    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
  };
  function d3_geo_clipExtent(x0, y0, x1, y1) {
    return function(listener) {
      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          listener = bufferListener;
          segments = [];
          polygon = [];
          clean = true;
        },
        polygonEnd: function() {
          listener = listener_;
          segments = d3.merge(segments);
          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
          if (inside || visible) {
            listener.polygonStart();
            if (inside) {
              listener.lineStart();
              interpolate(null, null, 1, listener);
              listener.lineEnd();
            }
            if (visible) {
              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
            }
            listener.polygonEnd();
          }
          segments = polygon = ring = null;
        }
      };
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {
          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
            b = v[j];
            if (a[1] <= y) {
              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
            } else {
              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
            }
            a = b;
          }
        }
        return wn !== 0;
      }
      function interpolate(from, to, direction, listener) {
        var a = 0, a1 = 0;
        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
          do {
            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
          } while ((a = (a + direction + 4) % 4) !== a1);
        } else {
          listener.point(to[0], to[1]);
        }
      }
      function pointVisible(x, y) {
        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
      }
      function point(x, y) {
        if (pointVisible(x, y)) listener.point(x, y);
      }
      var x__, y__, v__, x_, y_, v_, first, clean;
      function lineStart() {
        clip.point = linePoint;
        if (polygon) polygon.push(ring = []);
        first = true;
        v_ = false;
        x_ = y_ = NaN;
      }
      function lineEnd() {
        if (segments) {
          linePoint(x__, y__);
          if (v__ && v_) bufferListener.rejoin();
          segments.push(bufferListener.buffer());
        }
        clip.point = point;
        if (v_) listener.lineEnd();
      }
      function linePoint(x, y) {
        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
        var v = pointVisible(x, y);
        if (polygon) ring.push([ x, y ]);
        if (first) {
          x__ = x, y__ = y, v__ = v;
          first = false;
          if (v) {
            listener.lineStart();
            listener.point(x, y);
          }
        } else {
          if (v && v_) listener.point(x, y); else {
            var l = {
              a: {
                x: x_,
                y: y_
              },
              b: {
                x: x,
                y: y
              }
            };
            if (clipLine(l)) {
              if (!v_) {
                listener.lineStart();
                listener.point(l.a.x, l.a.y);
              }
              listener.point(l.b.x, l.b.y);
              if (!v) listener.lineEnd();
              clean = false;
            } else if (v) {
              listener.lineStart();
              listener.point(x, y);
              clean = false;
            }
          }
        }
        x_ = x, y_ = y, v_ = v;
      }
      return clip;
    };
    function corner(p, direction) {
      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
    }
    function compare(a, b) {
      return comparePoints(a.x, b.x);
    }
    function comparePoints(a, b) {
      var ca = corner(a, 1), cb = corner(b, 1);
      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
    }
  }
  function d3_geo_conic(projectAt) {
    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
    };
    return p;
  }
  function d3_geo_conicEqualArea(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function forward(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return forward;
  }
  (d3.geo.conicEqualArea = function() {
    return d3_geo_conic(d3_geo_conicEqualArea);
  }).raw = d3_geo_conicEqualArea;
  d3.geo.albers = function() {
    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
  };
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
    var point, pointStream = {
      point: function(x, y) {
        point = [ x, y ];
      }
    }, lower48Point, alaskaPoint, hawaiiPoint;
    function albersUsa(coordinates) {
      var x = coordinates[0], y = coordinates[1];
      point = null;
      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
      return point;
    }
    albersUsa.invert = function(coordinates) {
      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
    };
    albersUsa.stream = function(stream) {
      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
      return {
        point: function(x, y) {
          lower48Stream.point(x, y);
          alaskaStream.point(x, y);
          hawaiiStream.point(x, y);
        },
        sphere: function() {
          lower48Stream.sphere();
          alaskaStream.sphere();
          hawaiiStream.sphere();
        },
        lineStart: function() {
          lower48Stream.lineStart();
          alaskaStream.lineStart();
          hawaiiStream.lineStart();
        },
        lineEnd: function() {
          lower48Stream.lineEnd();
          alaskaStream.lineEnd();
          hawaiiStream.lineEnd();
        },
        polygonStart: function() {
          lower48Stream.polygonStart();
          alaskaStream.polygonStart();
          hawaiiStream.polygonStart();
        },
        polygonEnd: function() {
          lower48Stream.polygonEnd();
          alaskaStream.polygonEnd();
          hawaiiStream.polygonEnd();
        }
      };
    };
    albersUsa.precision = function(_) {
      if (!arguments.length) return lower48.precision();
      lower48.precision(_);
      alaska.precision(_);
      hawaii.precision(_);
      return albersUsa;
    };
    albersUsa.scale = function(_) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(_);
      alaska.scale(_ * .35);
      hawaii.scale(_);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(_) {
      if (!arguments.length) return lower48.translate();
      var k = lower48.scale(), x = +_[0], y = +_[1];
      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
      return albersUsa;
    };
    return albersUsa.scale(1070);
  };
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
  var d3_geo_pathBounds = {
    point: d3_geo_pathBoundsPoint,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_pathBoundsPoint(x, y) {
    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathBufferCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathBufferCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    d3_geo_centroidX0 += x;
    d3_geo_centroidY0 += y;
    ++d3_geo_centroidZ0;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX1 += z * (x0 + x) / 2;
      d3_geo_centroidY1 += z * (y0 + y) / 2;
      d3_geo_centroidZ1 += z;
      z = y0 * x - x0 * y;
      d3_geo_centroidX2 += z * (x0 + x);
      d3_geo_centroidY2 += z * (y0 + y);
      d3_geo_centroidZ2 += z * 3;
      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x + pointRadius, y);
      context.arc(x, y, pointRadius, 0, τ);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
    function resample(stream) {
      return (maxDepth ? resampleRecursive : resampleNone)(stream);
    }
    function resampleNone(stream) {
      return d3_geo_transformPoint(stream, function(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      });
    }
    function resampleRecursive(stream) {
      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = ringStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function ringStart() {
        lineStart();
        resample.point = ringPoint;
        resample.lineEnd = ringEnd;
      }
      function ringPoint(λ, φ) {
        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
        resample.point = linePoint;
      }
      function ringEnd() {
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
        resample.lineEnd = lineEnd;
        lineEnd();
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
    function path(object) {
      if (object) {
        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
        d3.geo.stream(object, cacheStream);
      }
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
    };
    path.bounds = function(object) {
      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return reset();
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
      return reset();
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
      return path;
    };
    function reset() {
      cacheStream = null;
      return path;
    }
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(x, y) {
      return project([ x * d3_degrees, y * d3_degrees ]);
    });
    return function(stream) {
      return d3_geo_projectionRadians(resample(stream));
    };
  }
  d3.geo.transform = function(methods) {
    return {
      stream: function(stream) {
        var transform = new d3_geo_transform(stream);
        for (var k in methods) transform[k] = methods[k];
        return transform;
      }
    };
  };
  function d3_geo_transform(stream) {
    this.stream = stream;
  }
  d3_geo_transform.prototype = {
    point: function(x, y) {
      this.stream.point(x, y);
    },
    sphere: function() {
      this.stream.sphere();
    },
    lineStart: function() {
      this.stream.lineStart();
    },
    lineEnd: function() {
      this.stream.lineEnd();
    },
    polygonStart: function() {
      this.stream.polygonStart();
    },
    polygonEnd: function() {
      this.stream.polygonEnd();
    }
  };
  function d3_geo_transformPoint(stream, point) {
    return {
      point: point,
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(output) {
      if (stream) stream.valid = false;
      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
      stream.valid = true;
      return stream;
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
      return invalidate();
    };
    projection.clipExtent = function(_) {
      if (!arguments.length) return clipExtent;
      clipExtent = _;
      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
      return invalidate();
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return invalidate();
    }
    function invalidate() {
      if (stream) stream.valid = false, stream = null;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadians(stream) {
    return d3_geo_transformPoint(stream, function(x, y) {
      stream.point(x * d3_radians, y * d3_radians);
    });
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  d3.geo.rotation = function(rotate) {
    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
    function forward(coordinates) {
      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    }
    forward.invert = function(coordinates) {
      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
    };
    return forward;
  };
  function d3_geo_identityRotation(λ, φ) {
    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
  }
  d3_geo_identityRotation.invert = d3_geo_equirectangular;
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
    };
    return rotation;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radius, precision) {
    var cr = Math.cos(radius), sr = Math.sin(radius);
    return function(from, to, direction, listener) {
      var step = direction * precision;
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * τ;
      } else {
        from = radius + direction * τ;
        to = radius - .5 * step;
      }
      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = d3_acos(-a[1]);
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  d3.geo.distance = function(a, b) {
    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
  };
  d3.geo.graticule = function() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
        return abs(x % DX) > ε;
      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
        return abs(y % DY) > ε;
      }).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return graticule.minorExtent();
      return graticule.majorExtent(_).minorExtent(_);
    };
    graticule.majorExtent = function(_) {
      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
      X0 = +_[0][0], X1 = +_[1][0];
      Y0 = +_[0][1], Y1 = +_[1][1];
      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
      return graticule.precision(precision);
    };
    graticule.minorExtent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return graticule.minorStep();
      return graticule.majorStep(_).minorStep(_);
    };
    graticule.majorStep = function(_) {
      if (!arguments.length) return [ DX, DY ];
      DX = +_[0], DY = +_[1];
      return graticule;
    };
    graticule.minorStep = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, 90);
      y = d3_geo_graticuleY(x0, x1, precision);
      X = d3_geo_graticuleX(Y0, Y1, 90);
      Y = d3_geo_graticuleY(X0, X1, precision);
      return graticule;
    };
    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_source(d) {
    return d.source;
  }
  function d3_target(d) {
    return d.target;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_;
    function greatArc() {
      return {
        type: "LineString",
        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
      };
    }
    greatArc.distance = function() {
      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      return greatArc;
    };
    greatArc.precision = function() {
      return arguments.length ? greatArc : 0;
    };
    return greatArc;
  };
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.length = function(object) {
    d3_geo_lengthSum = 0;
    d3.geo.stream(object, d3_geo_length);
    return d3_geo_lengthSum;
  };
  var d3_geo_lengthSum;
  var d3_geo_length = {
    sphere: d3_noop,
    point: d3_noop,
    lineStart: d3_geo_lengthLineStart,
    lineEnd: d3_noop,
    polygonStart: d3_noop,
    polygonEnd: d3_noop
  };
  function d3_geo_lengthLineStart() {
    var λ0, sinφ0, cosφ0;
    d3_geo_length.point = function(λ, φ) {
      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
      d3_geo_length.point = nextPoint;
    };
    d3_geo_length.lineEnd = function() {
      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
    };
    function nextPoint(λ, φ) {
      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
    }
  }
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  function d3_geo_conicConformal(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), t = function(φ) {
      return Math.tan(π / 4 + φ / 2);
    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
    if (!n) return d3_geo_mercator;
    function forward(λ, φ) {
      if (F > 0) {
        if (φ < -halfπ + ε) φ = -halfπ + ε;
      } else {
        if (φ > halfπ - ε) φ = halfπ - ε;
      }
      var ρ = F / Math.pow(t(φ), n);
      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
    };
    return forward;
  }
  (d3.geo.conicConformal = function() {
    return d3_geo_conic(d3_geo_conicConformal);
  }).raw = d3_geo_conicConformal;
  function d3_geo_conicEquidistant(φ0, φ1) {
    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
    if (abs(n) < ε) return d3_geo_equirectangular;
    function forward(λ, φ) {
      var ρ = G - φ;
      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
    }
    forward.invert = function(x, y) {
      var ρ0_y = G - y;
      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
    };
    return forward;
  }
  (d3.geo.conicEquidistant = function() {
    return d3_geo_conic(d3_geo_conicEquidistant);
  }).raw = d3_geo_conicEquidistant;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  function d3_geo_mercator(λ, φ) {
    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
  };
  function d3_geo_mercatorProjection(project) {
    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
    m.scale = function() {
      var v = scale.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.translate = function() {
      var v = translate.apply(m, arguments);
      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
    };
    m.clipExtent = function(_) {
      var v = clipExtent.apply(m, arguments);
      if (v === m) {
        if (clipAuto = _ == null) {
          var k = π * scale(), t = translate();
          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
        }
      } else if (clipAuto) {
        v = null;
      }
      return v;
    };
    return m.clipExtent(null);
  }
  (d3.geo.mercator = function() {
    return d3_geo_mercatorProjection(d3_geo_mercator);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_transverseMercator(λ, φ) {
    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
  }
  d3_geo_transverseMercator.invert = function(x, y) {
    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
  };
  (d3.geo.transverseMercator = function() {
    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
    projection.center = function(_) {
      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
    };
    projection.rotate = function(_) {
      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(),
      [ _[0], _[1], _[2] - 90 ]);
    };
    return rotate([ 0, 0, 90 ]);
  }).raw = d3_geo_transverseMercator;
  d3.geom = {};
  function d3_geom_pointX(d) {
    return d[0];
  }
  function d3_geom_pointY(d) {
    return d[1];
  }
  d3.geom.hull = function(vertices) {
    var x = d3_geom_pointX, y = d3_geom_pointY;
    if (arguments.length) return hull(vertices);
    function hull(data) {
      if (data.length < 3) return [];
      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
      for (i = 0; i < n; i++) {
        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
      }
      points.sort(d3_geom_hullOrder);
      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
      return polygon;
    }
    hull.x = function(_) {
      return arguments.length ? (x = _, hull) : x;
    };
    hull.y = function(_) {
      return arguments.length ? (y = _, hull) : y;
    };
    return hull;
  };
  function d3_geom_hullUpper(points) {
    var n = points.length, hull = [ 0, 1 ], hs = 2;
    for (var i = 2; i < n; i++) {
      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
      hull[hs++] = i;
    }
    return hull.slice(0, hs);
  }
  function d3_geom_hullOrder(a, b) {
    return a[0] - b[0] || a[1] - b[1];
  }
  d3.geom.polygon = function(coordinates) {
    d3_subclass(coordinates, d3_geom_polygonPrototype);
    return coordinates;
  };
  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
  d3_geom_polygonPrototype.area = function() {
    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
    while (++i < n) {
      a = b;
      b = this[i];
      area += a[1] * b[0] - a[0] * b[1];
    }
    return area * .5;
  };
  d3_geom_polygonPrototype.centroid = function(k) {
    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
    if (!arguments.length) k = -1 / (6 * this.area());
    while (++i < n) {
      a = b;
      b = this[i];
      c = a[0] * b[1] - b[0] * a[1];
      x += (a[0] + b[0]) * c;
      y += (a[1] + b[1]) * c;
    }
    return [ x * k, y * k ];
  };
  d3_geom_polygonPrototype.clip = function(subject) {
    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
    while (++i < n) {
      input = subject.slice();
      subject.length = 0;
      b = this[i];
      c = input[(m = input.length - closed) - 1];
      j = -1;
      while (++j < m) {
        d = input[j];
        if (d3_geom_polygonInside(d, a, b)) {
          if (!d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          subject.push(d);
        } else if (d3_geom_polygonInside(c, a, b)) {
          subject.push(d3_geom_polygonIntersect(c, d, a, b));
        }
        c = d;
      }
      if (closed) subject.push(subject[0]);
      a = b;
    }
    return subject;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  function d3_geom_polygonClosed(coordinates) {
    var a = coordinates[0], b = coordinates[coordinates.length - 1];
    return !(a[0] - b[0] || a[1] - b[1]);
  }
  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
  function d3_geom_voronoiBeach() {
    d3_geom_voronoiRedBlackNode(this);
    this.edge = this.site = this.circle = null;
  }
  function d3_geom_voronoiCreateBeach(site) {
    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
    beach.site = site;
    return beach;
  }
  function d3_geom_voronoiDetachBeach(beach) {
    d3_geom_voronoiDetachCircle(beach);
    d3_geom_voronoiBeaches.remove(beach);
    d3_geom_voronoiBeachPool.push(beach);
    d3_geom_voronoiRedBlackNode(beach);
  }
  function d3_geom_voronoiRemoveBeach(beach) {
    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
      x: x,
      y: y
    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
    d3_geom_voronoiDetachBeach(beach);
    var lArc = previous;
    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
      previous = lArc.P;
      disappearing.unshift(lArc);
      d3_geom_voronoiDetachBeach(lArc);
      lArc = previous;
    }
    disappearing.unshift(lArc);
    d3_geom_voronoiDetachCircle(lArc);
    var rArc = next;
    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
      next = rArc.N;
      disappearing.push(rArc);
      d3_geom_voronoiDetachBeach(rArc);
      rArc = next;
    }
    disappearing.push(rArc);
    d3_geom_voronoiDetachCircle(rArc);
    var nArcs = disappearing.length, iArc;
    for (iArc = 1; iArc < nArcs; ++iArc) {
      rArc = disappearing[iArc];
      lArc = disappearing[iArc - 1];
      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
    }
    lArc = disappearing[0];
    rArc = disappearing[nArcs - 1];
    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiAddBeach(site) {
    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
    while (node) {
      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
      if (dxl > ε) node = node.L; else {
        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
        if (dxr > ε) {
          if (!node.R) {
            lArc = node;
            break;
          }
          node = node.R;
        } else {
          if (dxl > -ε) {
            lArc = node.P;
            rArc = node;
          } else if (dxr > -ε) {
            lArc = node;
            rArc = node.N;
          } else {
            lArc = rArc = node;
          }
          break;
        }
      }
    }
    var newArc = d3_geom_voronoiCreateBeach(site);
    d3_geom_voronoiBeaches.insert(lArc, newArc);
    if (!lArc && !rArc) return;
    if (lArc === rArc) {
      d3_geom_voronoiDetachCircle(lArc);
      rArc = d3_geom_voronoiCreateBeach(lArc.site);
      d3_geom_voronoiBeaches.insert(newArc, rArc);
      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      d3_geom_voronoiAttachCircle(lArc);
      d3_geom_voronoiAttachCircle(rArc);
      return;
    }
    if (!rArc) {
      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
      return;
    }
    d3_geom_voronoiDetachCircle(lArc);
    d3_geom_voronoiDetachCircle(rArc);
    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
      x: (cy * hb - by * hc) / d + ax,
      y: (bx * hc - cx * hb) / d + ay
    };
    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
    d3_geom_voronoiAttachCircle(lArc);
    d3_geom_voronoiAttachCircle(rArc);
  }
  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
    if (!pby2) return rfocx;
    var lArc = arc.P;
    if (!lArc) return -Infinity;
    site = lArc.site;
    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
    if (!plby2) return lfocx;
    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
    return (rfocx + lfocx) / 2;
  }
  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
    var rArc = arc.N;
    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
    var site = arc.site;
    return site.y === directrix ? site.x : Infinity;
  }
  function d3_geom_voronoiCell(site) {
    this.site = site;
    this.edges = [];
  }
  d3_geom_voronoiCell.prototype.prepare = function() {
    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
    while (iHalfEdge--) {
      edge = halfEdges[iHalfEdge].edge;
      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
    }
    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
    return halfEdges.length;
  };
  function d3_geom_voronoiCloseCells(extent) {
    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
    while (iCell--) {
      cell = cells[iCell];
      if (!cell || !cell.prepare()) continue;
      halfEdges = cell.edges;
      nHalfEdges = halfEdges.length;
      iHalfEdge = 0;
      while (iHalfEdge < nHalfEdges) {
        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
            x: x0,
            y: abs(x2 - x0) < ε ? y2 : y1
          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
            x: abs(y2 - y1) < ε ? x2 : x1,
            y: y1
          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
            x: x1,
            y: abs(x2 - x1) < ε ? y2 : y0
          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
            x: abs(y2 - y0) < ε ? x2 : x0,
            y: y0
          } : null), cell.site, null));
          ++nHalfEdges;
        }
      }
    }
  }
  function d3_geom_voronoiHalfEdgeOrder(a, b) {
    return b.angle - a.angle;
  }
  function d3_geom_voronoiCircle() {
    d3_geom_voronoiRedBlackNode(this);
    this.x = this.y = this.arc = this.site = this.cy = null;
  }
  function d3_geom_voronoiAttachCircle(arc) {
    var lArc = arc.P, rArc = arc.N;
    if (!lArc || !rArc) return;
    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
    if (lSite === rSite) return;
    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
    var d = 2 * (ax * cy - ay * cx);
    if (d >= -ε2) return;
    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
    circle.arc = arc;
    circle.site = cSite;
    circle.x = x + bx;
    circle.y = cy + Math.sqrt(x * x + y * y);
    circle.cy = cy;
    arc.circle = circle;
    var before = null, node = d3_geom_voronoiCircles._;
    while (node) {
      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
        if (node.L) node = node.L; else {
          before = node.P;
          break;
        }
      } else {
        if (node.R) node = node.R; else {
          before = node;
          break;
        }
      }
    }
    d3_geom_voronoiCircles.insert(before, circle);
    if (!before) d3_geom_voronoiFirstCircle = circle;
  }
  function d3_geom_voronoiDetachCircle(arc) {
    var circle = arc.circle;
    if (circle) {
      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
      d3_geom_voronoiCircles.remove(circle);
      d3_geom_voronoiCirclePool.push(circle);
      d3_geom_voronoiRedBlackNode(circle);
      arc.circle = null;
    }
  }
  function d3_geom_voronoiClipEdges(extent) {
    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
    while (i--) {
      e = edges[i];
      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
        e.a = e.b = null;
        edges.splice(i, 1);
      }
    }
  }
  function d3_geom_voronoiConnectEdge(edge, extent) {
    var vb = edge.b;
    if (vb) return true;
    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
    if (ry === ly) {
      if (fx < x0 || fx >= x1) return;
      if (lx > rx) {
        if (!va) va = {
          x: fx,
          y: y0
        }; else if (va.y >= y1) return;
        vb = {
          x: fx,
          y: y1
        };
      } else {
        if (!va) va = {
          x: fx,
          y: y1
        }; else if (va.y < y0) return;
        vb = {
          x: fx,
          y: y0
        };
      }
    } else {
      fm = (lx - rx) / (ry - ly);
      fb = fy - fm * fx;
      if (fm < -1 || fm > 1) {
        if (lx > rx) {
          if (!va) va = {
            x: (y0 - fb) / fm,
            y: y0
          }; else if (va.y >= y1) return;
          vb = {
            x: (y1 - fb) / fm,
            y: y1
          };
        } else {
          if (!va) va = {
            x: (y1 - fb) / fm,
            y: y1
          }; else if (va.y < y0) return;
          vb = {
            x: (y0 - fb) / fm,
            y: y0
          };
        }
      } else {
        if (ly < ry) {
          if (!va) va = {
            x: x0,
            y: fm * x0 + fb
          }; else if (va.x >= x1) return;
          vb = {
            x: x1,
            y: fm * x1 + fb
          };
        } else {
          if (!va) va = {
            x: x1,
            y: fm * x1 + fb
          }; else if (va.x < x0) return;
          vb = {
            x: x0,
            y: fm * x0 + fb
          };
        }
      }
    }
    edge.a = va;
    edge.b = vb;
    return true;
  }
  function d3_geom_voronoiEdge(lSite, rSite) {
    this.l = lSite;
    this.r = rSite;
    this.a = this.b = null;
  }
  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, rSite);
    d3_geom_voronoiEdges.push(edge);
    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
    return edge;
  }
  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
    var edge = new d3_geom_voronoiEdge(lSite, null);
    edge.a = va;
    edge.b = vb;
    d3_geom_voronoiEdges.push(edge);
    return edge;
  }
  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
    if (!edge.a && !edge.b) {
      edge.a = vertex;
      edge.l = lSite;
      edge.r = rSite;
    } else if (edge.l === rSite) {
      edge.b = vertex;
    } else {
      edge.a = vertex;
    }
  }
  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
    var va = edge.a, vb = edge.b;
    this.edge = edge;
    this.site = lSite;
    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
  }
  d3_geom_voronoiHalfEdge.prototype = {
    start: function() {
      return this.edge.l === this.site ? this.edge.a : this.edge.b;
    },
    end: function() {
      return this.edge.l === this.site ? this.edge.b : this.edge.a;
    }
  };
  function d3_geom_voronoiRedBlackTree() {
    this._ = null;
  }
  function d3_geom_voronoiRedBlackNode(node) {
    node.U = node.C = node.L = node.R = node.P = node.N = null;
  }
  d3_geom_voronoiRedBlackTree.prototype = {
    insert: function(after, node) {
      var parent, grandpa, uncle;
      if (after) {
        node.P = after;
        node.N = after.N;
        if (after.N) after.N.P = node;
        after.N = node;
        if (after.R) {
          after = after.R;
          while (after.L) after = after.L;
          after.L = node;
        } else {
          after.R = node;
        }
        parent = after;
      } else if (this._) {
        after = d3_geom_voronoiRedBlackFirst(this._);
        node.P = null;
        node.N = after;
        after.P = after.L = node;
        parent = after;
      } else {
        node.P = node.N = null;
        this._ = node;
        parent = null;
      }
      node.L = node.R = null;
      node.U = parent;
      node.C = true;
      after = node;
      while (parent && parent.C) {
        grandpa = parent.U;
        if (parent === grandpa.L) {
          uncle = grandpa.R;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.R) {
              d3_geom_voronoiRedBlackRotateLeft(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
          }
        } else {
          uncle = grandpa.L;
          if (uncle && uncle.C) {
            parent.C = uncle.C = false;
            grandpa.C = true;
            after = grandpa;
          } else {
            if (after === parent.L) {
              d3_geom_voronoiRedBlackRotateRight(this, parent);
              after = parent;
              parent = after.U;
            }
            parent.C = false;
            grandpa.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
          }
        }
        parent = after.U;
      }
      this._.C = false;
    },
    remove: function(node) {
      if (node.N) node.N.P = node.P;
      if (node.P) node.P.N = node.N;
      node.N = node.P = null;
      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
      if (parent) {
        if (parent.L === node) parent.L = next; else parent.R = next;
      } else {
        this._ = next;
      }
      if (left && right) {
        red = next.C;
        next.C = node.C;
        next.L = left;
        left.U = next;
        if (next !== right) {
          parent = next.U;
          next.U = node.U;
          node = next.R;
          parent.L = node;
          next.R = right;
          right.U = next;
        } else {
          next.U = parent;
          parent = next;
          node = next.R;
        }
      } else {
        red = node.C;
        node = next;
      }
      if (node) node.U = parent;
      if (red) return;
      if (node && node.C) {
        node.C = false;
        return;
      }
      do {
        if (node === this._) break;
        if (node === parent.L) {
          sibling = parent.R;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            sibling = parent.R;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.R || !sibling.R.C) {
              sibling.L.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateRight(this, sibling);
              sibling = parent.R;
            }
            sibling.C = parent.C;
            parent.C = sibling.R.C = false;
            d3_geom_voronoiRedBlackRotateLeft(this, parent);
            node = this._;
            break;
          }
        } else {
          sibling = parent.L;
          if (sibling.C) {
            sibling.C = false;
            parent.C = true;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            sibling = parent.L;
          }
          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
            if (!sibling.L || !sibling.L.C) {
              sibling.R.C = false;
              sibling.C = true;
              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
              sibling = parent.L;
            }
            sibling.C = parent.C;
            parent.C = sibling.L.C = false;
            d3_geom_voronoiRedBlackRotateRight(this, parent);
            node = this._;
            break;
          }
        }
        sibling.C = true;
        node = parent;
        parent = parent.U;
      } while (!node.C);
      if (node) node.C = false;
    }
  };
  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
    var p = node, q = node.R, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.R = q.L;
    if (p.R) p.R.U = p;
    q.L = p;
  }
  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
    var p = node, q = node.L, parent = p.U;
    if (parent) {
      if (parent.L === p) parent.L = q; else parent.R = q;
    } else {
      tree._ = q;
    }
    q.U = parent;
    p.U = q;
    p.L = q.R;
    if (p.L) p.L.U = p;
    q.R = p;
  }
  function d3_geom_voronoiRedBlackFirst(node) {
    while (node.L) node = node.L;
    return node;
  }
  function d3_geom_voronoi(sites, bbox) {
    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
    d3_geom_voronoiEdges = [];
    d3_geom_voronoiCells = new Array(sites.length);
    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
    while (true) {
      circle = d3_geom_voronoiFirstCircle;
      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
        if (site.x !== x0 || site.y !== y0) {
          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
          d3_geom_voronoiAddBeach(site);
          x0 = site.x, y0 = site.y;
        }
        site = sites.pop();
      } else if (circle) {
        d3_geom_voronoiRemoveBeach(circle.arc);
      } else {
        break;
      }
    }
    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
    var diagram = {
      cells: d3_geom_voronoiCells,
      edges: d3_geom_voronoiEdges
    };
    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
    return diagram;
  }
  function d3_geom_voronoiVertexOrder(a, b) {
    return b.y - a.y || b.x - a.x;
  }
  d3.geom.voronoi = function(points) {
    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
    if (points) return voronoi(points);
    function voronoi(data) {
      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
          var s = e.start();
          return [ s.x, s.y ];
        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
        polygon.point = data[i];
      });
      return polygons;
    }
    function sites(data) {
      return data.map(function(d, i) {
        return {
          x: Math.round(fx(d, i) / ε) * ε,
          y: Math.round(fy(d, i) / ε) * ε,
          i: i
        };
      });
    }
    voronoi.links = function(data) {
      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
        return edge.l && edge.r;
      }).map(function(edge) {
        return {
          source: data[edge.l.i],
          target: data[edge.r.i]
        };
      });
    };
    voronoi.triangles = function(data) {
      var triangles = [];
      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
        while (++j < m) {
          e0 = e1;
          s0 = s1;
          e1 = edges[j].edge;
          s1 = e1.l === site ? e1.r : e1.l;
          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
          }
        }
      });
      return triangles;
    };
    voronoi.x = function(_) {
      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
    };
    voronoi.y = function(_) {
      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
    };
    voronoi.clipExtent = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
      return voronoi;
    };
    voronoi.size = function(_) {
      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
    };
    return voronoi;
  };
  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
  function d3_geom_voronoiTriangleArea(a, b, c) {
    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
  }
  d3.geom.delaunay = function(vertices) {
    return d3.geom.voronoi().triangles(vertices);
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
    if (compat = arguments.length) {
      x = d3_geom_quadtreeCompatX;
      y = d3_geom_quadtreeCompatY;
      if (compat === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      }
      return quadtree(points);
    }
    function quadtree(data) {
      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
      if (x1 != null) {
        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
      } else {
        x2_ = y2_ = -(x1_ = y1_ = Infinity);
        xs = [], ys = [];
        n = data.length;
        if (compat) for (i = 0; i < n; ++i) {
          d = data[i];
          if (d.x < x1_) x1_ = d.x;
          if (d.y < y1_) y1_ = d.y;
          if (d.x > x2_) x2_ = d.x;
          if (d.y > y2_) y2_ = d.y;
          xs.push(d.x);
          ys.push(d.y);
        } else for (i = 0; i < n; ++i) {
          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
          if (x_ < x1_) x1_ = x_;
          if (y_ < y1_) y1_ = y_;
          if (x_ > x2_) x2_ = x_;
          if (y_ > y2_) y2_ = y_;
          xs.push(x_);
          ys.push(y_);
        }
      }
      var dx = x2_ - x1_, dy = y2_ - y1_;
      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
      function insert(n, d, x, y, x1, y1, x2, y2) {
        if (isNaN(x) || isNaN(y)) return;
        if (n.leaf) {
          var nx = n.x, ny = n.y;
          if (nx != null) {
            if (abs(nx - x) + abs(ny - y) < .01) {
              insertChild(n, d, x, y, x1, y1, x2, y2);
            } else {
              var nPoint = n.point;
              n.x = n.y = n.point = null;
              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
              insertChild(n, d, x, y, x1, y1, x2, y2);
            }
          } else {
            n.x = x, n.y = y, n.point = d;
          }
        } else {
          insertChild(n, d, x, y, x1, y1, x2, y2);
        }
      }
      function insertChild(n, d, x, y, x1, y1, x2, y2) {
        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
        n.leaf = false;
        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
        if (right) x1 = xm; else x2 = xm;
        if (below) y1 = ym; else y2 = ym;
        insert(n, d, x, y, x1, y1, x2, y2);
      }
      var root = d3_geom_quadtreeNode();
      root.add = function(d) {
        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
      };
      root.visit = function(f) {
        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
      };
      root.find = function(point) {
        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
      };
      i = -1;
      if (x1 == null) {
        while (++i < n) {
          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
        }
        --i;
      } else data.forEach(root.add);
      xs = ys = data = d = null;
      return root;
    }
    quadtree.x = function(_) {
      return arguments.length ? (x = _, quadtree) : x;
    };
    quadtree.y = function(_) {
      return arguments.length ? (y = _, quadtree) : y;
    };
    quadtree.extent = function(_) {
      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0],
      y2 = +_[1][1];
      return quadtree;
    };
    quadtree.size = function(_) {
      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
      return quadtree;
    };
    return quadtree;
  };
  function d3_geom_quadtreeCompatX(d) {
    return d.x;
  }
  function d3_geom_quadtreeCompatY(d) {
    return d.y;
  }
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null,
      x: null,
      y: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
    var minDistance2 = Infinity, closestPoint;
    (function find(node, x1, y1, x2, y2) {
      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
      if (point = node.point) {
        var point, dx = x - point[0], dy = y - point[1], distance2 = dx * dx + dy * dy;
        if (distance2 < minDistance2) {
          var distance = Math.sqrt(minDistance2 = distance2);
          x0 = x - distance, y0 = y - distance;
          x3 = x + distance, y3 = y + distance;
          closestPoint = point;
        }
      }
      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
        if (node = children[i & 3]) switch (i & 3) {
         case 0:
          find(node, x1, y1, xm, ym);
          break;

         case 1:
          find(node, xm, y1, x2, ym);
          break;

         case 2:
          find(node, x1, ym, xm, y2);
          break;

         case 3:
          find(node, xm, ym, x2, y2);
          break;
        }
      }
    })(root, x0, y0, x3, y3);
    return closestPoint;
  }
  d3.interpolateRgb = d3_interpolateRgb;
  function d3_interpolateRgb(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  }
  d3.interpolateObject = d3_interpolateObject;
  function d3_interpolateObject(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolate(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  }
  d3.interpolateNumber = d3_interpolateNumber;
  function d3_interpolateNumber(a, b) {
    a = +a, b = +b;
    return function(t) {
      return a * (1 - t) + b * t;
    };
  }
  d3.interpolateString = d3_interpolateString;
  function d3_interpolateString(a, b) {
    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
    a = a + "", b = b + "";
    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
      if ((bs = bm.index) > bi) {
        bs = b.slice(bi, bs);
        if (s[i]) s[i] += bs; else s[++i] = bs;
      }
      if ((am = am[0]) === (bm = bm[0])) {
        if (s[i]) s[i] += bm; else s[++i] = bm;
      } else {
        s[++i] = null;
        q.push({
          i: i,
          x: d3_interpolateNumber(am, bm)
        });
      }
      bi = d3_interpolate_numberB.lastIndex;
    }
    if (bi < b.length) {
      bs = b.slice(bi);
      if (s[i]) s[i] += bs; else s[++i] = bs;
    }
    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
      return b(t) + "";
    }) : function() {
      return b;
    } : (b = q.length, function(t) {
      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    });
  }
  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
  d3.interpolate = d3_interpolate;
  function d3_interpolate(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  }
  d3.interpolators = [ function(a, b) {
    var t = typeof b;
    return (t === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
  } ];
  d3.interpolateArray = d3_interpolateArray;
  function d3_interpolateArray(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * halfπ);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.interpolateHcl = d3_interpolateHcl;
  function d3_interpolateHcl(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  }
  d3.interpolateHsl = d3_interpolateHsl;
  function d3_interpolateHsl(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
    };
  }
  d3.interpolateLab = d3_interpolateLab;
  function d3_interpolateLab(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  }
  d3.interpolateRound = d3_interpolateRound;
  function d3_interpolateRound(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      if (string != null) {
        g.setAttribute("transform", string);
        var t = g.transform.baseVal.consolidate();
      }
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolateTransform = d3_interpolateTransform;
  function d3_interpolateTransform(a, b) {
    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
    if (ta[0] != tb[0] || ta[1] != tb[1]) {
      s.push("translate(", null, ",", null, ")");
      q.push({
        i: 1,
        x: d3_interpolateNumber(ta[0], tb[0])
      }, {
        i: 3,
        x: d3_interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    } else {
      s.push("");
    }
    if (ra != rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(s.pop() + "rotate(", null, ")") - 2,
        x: d3_interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(s.pop() + "rotate(" + rb + ")");
    }
    if (wa != wb) {
      q.push({
        i: s.push(s.pop() + "skewX(", null, ")") - 2,
        x: d3_interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(s.pop() + "skewX(" + wb + ")");
    }
    if (ka[0] != kb[0] || ka[1] != kb[1]) {
      n = s.push(s.pop() + "scale(", null, ",", null, ")");
      q.push({
        i: n - 4,
        x: d3_interpolateNumber(ka[0], kb[0])
      }, {
        i: n - 2,
        x: d3_interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] != 1 || kb[1] != 1) {
      s.push(s.pop() + "scale(" + kb + ")");
    }
    n = q.length;
    return function(t) {
      var i = -1, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  }
  function d3_uninterpolateNumber(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return (x - a) / b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = (b -= a = +a) || 1 / b;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) / b));
    };
  }
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (τ - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: (x - x0) / k
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
          if (dw * dw / theta2 < dn) {
            if (dn < chargeDistance2) {
              var k = quad.charge / dn;
              node.px -= dx * k;
              node.py -= dy * k;
            }
            return true;
          }
          if (quad.point && dn && dn < chargeDistance2) {
            var k = quad.pointCharge / dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight / (t.weight + s.weight));
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.chargeDistance = function(x) {
      if (!arguments.length) return Math.sqrt(chargeDistance2);
      chargeDistance2 = x * x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return Math.sqrt(theta2);
      theta2 = x * x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) alpha = x; else alpha = 0;
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        d3.timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        if (!neighbors) {
          neighbors = new Array(n);
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        var candidates = neighbors[i], j = -1, m = candidates.length, x;
        while (++j < m) if (!isNaN(x = candidates[j][dimension])) return x;
        return Math.random() * size;
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function hierarchy(root) {
      var stack = [ root ], nodes = [], node;
      root.depth = 0;
      while ((node = stack.pop()) != null) {
        nodes.push(node);
        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
          var n, childs, child;
          while (--n >= 0) {
            stack.push(child = childs[n]);
            child.parent = node;
            child.depth = node.depth + 1;
          }
          if (value) node.value = 0;
          node.children = childs;
        } else {
          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
          delete node.children;
        }
      }
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var childs, parent;
        if (sort && (childs = node.children)) childs.sort(sort);
        if (value && (parent = node.parent)) parent.value += node.value;
      });
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      if (value) {
        d3_layout_hierarchyVisitBefore(root, function(node) {
          if (node.children) node.value = 0;
        });
        d3_layout_hierarchyVisitAfter(root, function(node) {
          var parent;
          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
          if (parent = node.parent) parent.value += node.value;
        });
      }
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyVisitBefore(node, callback) {
    var nodes = [ node ];
    while ((node = nodes.pop()) != null) {
      callback(node);
      if ((children = node.children) && (n = children.length)) {
        var n, children;
        while (--n >= 0) nodes.push(children[n]);
      }
    }
  }
  function d3_layout_hierarchyVisitAfter(node, callback) {
    var nodes = [ node ], nodes2 = [];
    while ((node = nodes.pop()) != null) {
      nodes2.push(node);
      if ((children = node.children) && (n = children.length)) {
        var i = -1, n, children;
        while (++i < n) nodes.push(children[i]);
      }
    }
    while ((node = nodes2.pop()) != null) {
      callback(node);
    }
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
    function pie(data) {
      var n = data.length, values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), k = (da - n * pa) / d3.sum(values), index = d3.range(n), arcs = [], v;
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      index.forEach(function(i) {
        arcs[i] = {
          data: data[i],
          value: v = values[i],
          startAngle: a,
          endAngle: a += v * k + pa,
          padAngle: p
        };
      });
      return arcs;
    }
    pie.value = function(_) {
      if (!arguments.length) return value;
      value = _;
      return pie;
    };
    pie.sort = function(_) {
      if (!arguments.length) return sort;
      sort = _;
      return pie;
    };
    pie.startAngle = function(_) {
      if (!arguments.length) return startAngle;
      startAngle = _;
      return pie;
    };
    pie.endAngle = function(_) {
      if (!arguments.length) return endAngle;
      endAngle = _;
      return pie;
    };
    pie.padAngle = function(_) {
      if (!arguments.length) return padAngle;
      padAngle = _;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      if (!(n = data.length)) return data;
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var m = series[0].length, n, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
        return radius;
      };
      root.x = root.y = 0;
      d3_layout_hierarchyVisitAfter(root, function(d) {
        d.r = +r(d.value);
      });
      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
      if (padding) {
        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
        d3_layout_hierarchyVisitAfter(root, function(d) {
          d.r -= dr;
        });
      }
      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
      return nodes;
    }
    pack.size = function(_) {
      if (!arguments.length) return size;
      size = _;
      return pack;
    };
    pack.radius = function(_) {
      if (!arguments.length) return radius;
      radius = _ == null || typeof _ === "function" ? _ : +_;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return .999 * dr * dr > dx * dx + dy * dy;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
      d3_layout_hierarchyVisitBefore(root1, secondWalk);
      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
        var left = root0, right = root0, bottom = root0;
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          if (node.x < left.x) left = node;
          if (node.x > right.x) right = node;
          if (node.depth > bottom.depth) bottom = node;
        });
        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
        d3_layout_hierarchyVisitBefore(root0, function(node) {
          node.x = (node.x + tx) * kx;
          node.y = node.depth * ky;
        });
      }
      return nodes;
    }
    function wrapTree(root0) {
      var root1 = {
        A: null,
        children: [ root0 ]
      }, queue = [ root1 ], node1;
      while ((node1 = queue.pop()) != null) {
        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
          queue.push((children[i] = child = {
            _: children[i],
            parent: node1,
            children: (child = children[i].children) && child.slice() || [],
            A: null,
            a: null,
            z: 0,
            m: 0,
            c: 0,
            s: 0,
            t: null,
            i: i
          }).a = child);
        }
      }
      return root1.children[0];
    }
    function firstWalk(v) {
      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
      if (children.length) {
        d3_layout_treeShift(v);
        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
        if (w) {
          v.z = w.z + separation(v._, w._);
          v.m = v.z - midpoint;
        } else {
          v.z = midpoint;
        }
      } else if (w) {
        v.z = w.z + separation(v._, w._);
      }
      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
    }
    function secondWalk(v) {
      v._.x = v.z + v.parent.m;
      v.m += v.parent.m;
    }
    function apportion(v, w, ancestor) {
      if (w) {
        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
          vom = d3_layout_treeLeft(vom);
          vop = d3_layout_treeRight(vop);
          vop.a = v;
          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
          if (shift > 0) {
            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
            sip += shift;
            sop += shift;
          }
          sim += vim.m;
          sip += vip.m;
          som += vom.m;
          sop += vop.m;
        }
        if (vim && !d3_layout_treeRight(vop)) {
          vop.t = vim;
          vop.m += sim - sop;
        }
        if (vip && !d3_layout_treeLeft(vom)) {
          vom.t = vip;
          vom.m += sip - som;
          ancestor = v;
        }
      }
      return ancestor;
    }
    function sizeNode(node) {
      node.x *= size[0];
      node.y = node.depth * size[1];
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null ? sizeNode : null;
      return tree;
    };
    tree.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) == null ? null : sizeNode;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(v) {
    var children = v.children;
    return children.length ? children[0] : v.t;
  }
  function d3_layout_treeRight(v) {
    var children = v.children, n;
    return (n = children.length) ? children[n - 1] : v.t;
  }
  function d3_layout_treeMove(wm, wp, shift) {
    var change = shift / (wp.i - wm.i);
    wp.c -= change;
    wp.s += shift;
    wm.c += change;
    wp.z += shift;
    wp.m += shift;
  }
  function d3_layout_treeShift(v) {
    var shift = 0, change = 0, children = v.children, i = children.length, w;
    while (--i >= 0) {
      w = children[i];
      w.z += shift;
      w.m += shift;
      shift += w.s + (change += w.c);
    }
  }
  function d3_layout_treeAncestor(vim, v, ancestor) {
    return vim.a.parent === v.parent ? vim.a : ancestor;
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_hierarchyVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
        node.x = (node.x - root.x) * size[0];
        node.y = (root.y - node.y) * size[1];
      } : function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return nodeSize ? null : size;
      nodeSize = (size = x) == null;
      return cluster;
    };
    cluster.nodeSize = function(x) {
      if (!arguments.length) return nodeSize ? size : null;
      nodeSize = (size = x) != null;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = 0;
      root.y = 0;
      root.dx = size[0];
      root.dy = size[1];
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ],
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    bates: function(m) {
      var random = d3.random.irwinHall(m);
      return function() {
        return random() / m;
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s;
      };
    }
  };
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    domain[i0] = nice.floor(x0);
    domain[i1] = nice.ceil(x1);
    return domain;
  }
  function d3_scale_niceStep(step) {
    return step ? {
      floor: function(x) {
        return Math.floor(x / step) * step;
      },
      ceil: function(x) {
        return Math.ceil(x / step) * step;
      }
    } : d3_scale_niceIdentity;
  }
  var d3_scale_niceIdentity = {
    floor: d3_identity,
    ceil: d3_identity
  };
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3_interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3_interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      d3_scale_linearNice(domain, m);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(domain, m) {
    return d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
  }
  function d3_scale_linearTickRange(domain, m) {
    if (m == null) m = 10;
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m, format) {
    var range = d3_scale_linearTickRange(domain, m);
    if (format) {
      var match = d3_format_re.exec(format);
      match.shift();
      if (match[8] === "s") {
        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
        match[8] = "f";
        format = d3.format(match.join(""));
        return function(d) {
          return format(prefix.scale(d)) + prefix.symbol;
        };
      }
      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
      format = match.join("");
    } else {
      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
    }
    return d3.format(format);
  }
  var d3_scale_linearFormatSignificant = {
    s: 1,
    g: 1,
    p: 1,
    r: 1,
    e: 1
  };
  function d3_scale_linearPrecision(value) {
    return -Math.floor(Math.log(value) / Math.LN10 + .01);
  }
  function d3_scale_linearFormatPrecision(type, range) {
    var p = d3_scale_linearPrecision(range[2]);
    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
  };
  function d3_scale_log(linear, base, positive, domain) {
    function log(x) {
      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
    }
    function pow(x) {
      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
    }
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      positive = x[0] >= 0;
      linear.domain((domain = x.map(Number)).map(log));
      return scale;
    };
    scale.base = function(_) {
      if (!arguments.length) return base;
      base = +_;
      linear.domain(domain.map(log));
      return scale;
    };
    scale.nice = function() {
      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
      linear.domain(niced);
      domain = niced.map(pow);
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
      if (isFinite(j - i)) {
        if (positive) {
          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        } else {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (!arguments.length) return d3_scale_logFormat;
      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
      var k = Math.max(.1, n / scale.ticks().length), f = positive ? (e = 1e-12, Math.ceil) : (e = -1e-12,
      Math.floor), e;
      return function(d) {
        return d / pow(f(log(d) + e)) <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), base, positive, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
    floor: function(x) {
      return -Math.ceil(-x);
    },
    ceil: function(x) {
      return -Math.floor(-x);
    }
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
  };
  function d3_scale_pow(linear, exponent, domain) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      linear.domain((domain = x.map(Number)).map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_linearNice(domain, m));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      linear.domain(domain.map(powp));
      return scale;
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent, domain);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2,
      0) : (stop - start) / (domain.length - 1 + padding);
      range = steps(start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundPoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2),
      0) : (stop - start) / (domain.length - 1 + padding) | 0;
      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
      rangeBand = 0;
      ranger = {
        t: "rangeRoundPoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      y = y < 0 ? NaN : y / kx + x0;
      return [ y, y + 1 / kx ];
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      if (x <= x) return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.invertExtent = function(y) {
      y = range.indexOf(y);
      return [ domain[y - 1], domain[y] ];
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m, format) {
      return d3_scale_linearTickFormat(domain, m, format);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  function d3_zero() {
    return 0;
  }
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
    function arc() {
      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
        if (!cw) p1 *= -1;
        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
      }
      if (r1) {
        x0 = r1 * Math.cos(a0 + p1);
        y0 = r1 * Math.sin(a0 + p1);
        x1 = r1 * Math.cos(a1 - p1);
        y1 = r1 * Math.sin(a1 - p1);
        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
          var h1 = (a0 + a1) / 2;
          x0 = r1 * Math.cos(h1);
          y0 = r1 * Math.sin(h1);
          x1 = y1 = null;
        }
      } else {
        x0 = y0 = 0;
      }
      if (r0) {
        x2 = r0 * Math.cos(a1 - p0);
        y2 = r0 * Math.sin(a1 - p0);
        x3 = r0 * Math.cos(a0 + p0);
        y3 = r0 * Math.sin(a0 + p0);
        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
          var h0 = (a0 + a1) / 2;
          x2 = r0 * Math.cos(h0);
          y2 = r0 * Math.sin(h0);
          x3 = y3 = null;
        }
      } else {
        x2 = y2 = 0;
      }
      if ((rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
        cr = r0 < r1 ^ cw ? 0 : 1;
        var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
        if (x1 != null) {
          var rc1 = Math.min(rc, (r1 - lc) / (kc + 1)), t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
          if (rc === rc1) {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
          } else {
            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
          }
        } else {
          path.push("M", x0, ",", y0);
        }
        if (x3 != null) {
          var rc0 = Math.min(rc, (r0 - lc) / (kc - 1)), t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
          if (rc === rc0) {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          } else {
            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
          }
        } else {
          path.push("L", x2, ",", y2);
        }
      } else {
        path.push("M", x0, ",", y0);
        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
        path.push("L", x2, ",", y2);
        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
      }
      path.push("Z");
      return path.join("");
    }
    function circleSegment(r1, cw) {
      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.cornerRadius = function(v) {
      if (!arguments.length) return cornerRadius;
      cornerRadius = d3_functor(v);
      return arc;
    };
    arc.padRadius = function(v) {
      if (!arguments.length) return padRadius;
      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.padAngle = function(v) {
      if (!arguments.length) return padAngle;
      padAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcAuto = "auto";
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_arcPadAngle(d) {
    return d && d.padAngle;
  }
  function d3_svg_arcSweep(x0, y0, x1, y1) {
    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
  }
  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(r * r * d2 - D * D), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
  }
  function d3_svg_line(projection) {
    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    step: d3_svg_lineStep,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.join("L");
  }
  function d3_svg_lineLinearClosed(points) {
    return d3_svg_lineLinear(points) + "Z";
  }
  function d3_svg_lineStep(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
    if (n > 1) path.push("H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]),
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    points.push(points[n - 1]);
    while (++i <= n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    points.pop();
    path.push("L", pi);
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (abs(d) < ε) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] - halfπ;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3_selectionPrototype.transition = function(name) {
    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
      time: Date.now(),
      ease: d3_ease_cubicInOut,
      delay: 0,
      duration: 250
    };
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_selectionPrototype.interrupt = function(name) {
    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
  };
  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
  function d3_selection_interruptNS(ns) {
    return function() {
      var lock, active;
      if ((lock = this[ns]) && (active = lock[lock.active])) {
        if (--lock.count) {
          delete lock[lock.active];
          lock.active += .5;
        } else {
          delete this[ns];
        }
        active.event && active.event.interrupt.call(this, this.__data__, active.index);
      }
    };
  }
  function d3_transition(groups, ns, id) {
    d3_subclass(groups, d3_transitionPrototype);
    groups.namespace = ns;
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3_transitionPrototype.size = d3_selectionPrototype.size;
  d3.transition = function(selection, name) {
    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3_selectionRoot.transition(selection);
  };
  d3.transition.prototype = d3_transitionPrototype;
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
    selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
    selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node[ns][id];
          subnodes = selector.call(node, node.__data__, i, j);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, ns, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.namespace, this.id);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node[ns][id].tween.remove(name);
    } : function(node) {
      node[ns][id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id, ns = groups.namespace;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node[ns][id].tween.set(name, value);
    }));
  }
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrTween(b) {
      return b == null ? attrNull : (b += "", function() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      });
    }
    function attrTweenNS(b) {
      return b == null ? attrNullNS : (b += "", function() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      });
    }
    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleString(b) {
      return b == null ? styleNull : (b += "", function() {
        var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = d3_interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      });
    }
    return d3_transition_tween(this, "style." + name, value, styleString);
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    function styleTween(d, i) {
      var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    }
    return this.tween("style." + name, styleTween);
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    var ns = this.namespace;
    return this.each("end.transition", function() {
      var p;
      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node[ns][id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].delay;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].delay = +value.call(node, node.__data__, i, j);
    } : (value = +value, function(node) {
      node[ns][id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 1) return this.node()[ns][id].duration;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
    } : (value = Math.max(1, value), function(node) {
      node[ns][id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id, ns = this.namespace;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      try {
        d3_transitionInheritId = id;
        d3_selection_each(this, function(node, i, j) {
          d3_transitionInherit = node[ns][id];
          type.call(node, node.__data__, i, j);
        });
      } finally {
        d3_transitionInherit = inherit;
        d3_transitionInheritId = inheritId;
      }
    } else {
      d3_selection_each(this, function(node) {
        var transition = node[ns][id];
        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = node[ns][id0];
          d3_transitionNode(node, i, ns, id1, {
            time: transition.time,
            ease: transition.ease,
            delay: transition.delay + transition.duration,
            duration: transition.duration
          });
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, ns, id1);
  };
  function d3_transitionNamespace(name) {
    return name == null ? "__transition__" : "__transition_" + name + "__";
  }
  function d3_transitionNode(node, i, ns, id, inherit) {
    var lock = node[ns] || (node[ns] = {
      active: 0,
      count: 0
    }), transition = lock[id];
    if (!transition) {
      var time = inherit.time;
      transition = lock[id] = {
        tween: new d3_Map(),
        time: time,
        delay: inherit.delay,
        duration: inherit.duration,
        ease: inherit.ease,
        index: i
      };
      inherit = null;
      ++lock.count;
      d3.timer(function(elapsed) {
        var delay = transition.delay, duration, ease, timer = d3_timer_active, tweened = [];
        timer.t = delay + time;
        if (delay <= elapsed) return start(elapsed - delay);
        timer.c = start;
        function start(elapsed) {
          if (lock.active > id) return stop();
          var active = lock[lock.active];
          if (active) {
            --lock.count;
            delete lock[lock.active];
            active.event && active.event.interrupt.call(node, node.__data__, active.index);
          }
          lock.active = id;
          transition.event && transition.event.start.call(node, node.__data__, i);
          transition.tween.forEach(function(key, value) {
            if (value = value.call(node, node.__data__, i)) {
              tweened.push(value);
            }
          });
          ease = transition.ease;
          duration = transition.duration;
          d3.timer(function() {
            timer.c = tick(elapsed || 1) ? d3_true : tick;
            return 1;
          }, 0, time);
        }
        function tick(elapsed) {
          if (lock.active !== id) return 1;
          var t = elapsed / duration, e = ease(t), n = tweened.length;
          while (n > 0) {
            tweened[--n].call(node, e);
          }
          if (t >= 1) {
            transition.event && transition.event.end.call(node, node.__data__, i);
            return stop();
          }
        }
        function stop() {
          if (--lock.count) delete lock[id]; else delete node[ns];
          return 1;
        }
      }, 0, time);
    }
  }
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"),
        d3.transition(path));
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
        if (orient === "bottom" || orient === "top") {
          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
        } else {
          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
        }
        lineEnter.attr(y2, sign * innerTickSize);
        textEnter.attr(y1, sign * tickSpacing);
        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
        if (scale1.rangeBand) {
          var x = scale1, dx = x.rangeBand() / 2;
          scale0 = scale1 = function(d) {
            return x(d) + dx;
          };
        } else if (scale0.rangeBand) {
          scale0 = scale1;
        } else {
          tickExit.call(tickTransform, scale1, scale0);
        }
        tickEnter.call(tickTransform, scale0, scale1);
        tickUpdate.call(tickTransform, scale1, scale1);
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = arguments;
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x) {
      var n = arguments.length;
      if (!n) return innerTickSize;
      innerTickSize = +x;
      outerTickSize = +arguments[n - 1];
      return axis;
    };
    axis.innerTickSize = function(x) {
      if (!arguments.length) return innerTickSize;
      innerTickSize = +x;
      return axis;
    };
    axis.outerTickSize = function(x) {
      if (!arguments.length) return outerTickSize;
      outerTickSize = +x;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function() {
      return arguments.length && axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x0, x1) {
    selection.attr("transform", function(d) {
      var v0 = x0(d);
      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y0, y1) {
    selection.attr("transform", function(d) {
      var v0 = y0(d);
      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
    });
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
    function brush(g) {
      g.each(function() {
        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        var background = g.selectAll(".background").data([ 0 ]);
        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
        var resize = g.selectAll(".resize").data(resizes, d3_identity);
        resize.exit().remove();
        resize.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        resize.style("display", brush.empty() ? "none" : null);
        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
        if (x) {
          range = d3_scaleRange(x);
          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
          redrawX(gUpdate);
        }
        if (y) {
          range = d3_scaleRange(y);
          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
          redrawY(gUpdate);
        }
        redraw(gUpdate);
      });
    }
    brush.event = function(g) {
      g.each(function() {
        var event_ = event.of(this, arguments), extent1 = {
          x: xExtent,
          y: yExtent,
          i: xExtentDomain,
          j: yExtentDomain
        }, extent0 = this.__chart__ || extent1;
        this.__chart__ = extent1;
        if (d3_transitionInheritId) {
          d3.select(this).transition().each("start.brush", function() {
            xExtentDomain = extent0.i;
            yExtentDomain = extent0.j;
            xExtent = extent0.x;
            yExtent = extent0.y;
            event_({
              type: "brushstart"
            });
          }).tween("brush:brush", function() {
            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
            xExtentDomain = yExtentDomain = null;
            return function(t) {
              xExtent = extent1.x = xi(t);
              yExtent = extent1.y = yi(t);
              event_({
                type: "brush",
                mode: "resize"
              });
            };
          }).each("end.brush", function() {
            xExtentDomain = extent1.i;
            yExtentDomain = extent1.j;
            event_({
              type: "brush",
              mode: "resize"
            });
            event_({
              type: "brushend"
            });
          });
        } else {
          event_({
            type: "brushstart"
          });
          event_({
            type: "brush",
            mode: "resize"
          });
          event_({
            type: "brushend"
          });
        }
      });
    };
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", xExtent[0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", yExtent[0]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(), center, origin = d3.mouse(target), offset;
      var w = d3.select(d3_window).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (d3.event.changedTouches) {
        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
      } else {
        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
      }
      g.interrupt().selectAll("*").interrupt();
      if (dragging) {
        origin[0] = xExtent[0] - origin[0];
        origin[1] = yExtent[0] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
        origin[0] = xExtent[ex];
        origin[1] = yExtent[ey];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= xExtent[1];
            origin[1] -= yExtent[1];
            dragging = 2;
          }
          d3_eventPreventDefault();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += xExtent[1];
          origin[1] += yExtent[1];
          dragging = 0;
          d3_eventPreventDefault();
        }
      }
      function brushmove() {
        var point = d3.mouse(target), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
            origin[0] = xExtent[+(point[0] < center[0])];
            origin[1] = yExtent[+(point[1] < center[1])];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0] != min || extent[1] != max) {
          if (i) yExtentDomain = null; else xExtentDomain = null;
          extent[0] = min;
          extent[1] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        dragRestore();
        event_({
          type: "brushend"
        });
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.clamp = function(z) {
      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        if (x) {
          if (xExtentDomain) {
            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
          } else {
            x0 = xExtent[0], x1 = xExtent[1];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          if (yExtentDomain) {
            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
          } else {
            y0 = yExtent[0], y1 = yExtent[1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        xExtentDomain = [ x0, x1 ];
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        yExtentDomain = [ y0, y1 ];
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
      }
      return brush;
    };
    brush.clear = function() {
      if (!brush.empty()) {
        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
        xExtentDomain = yExtentDomain = null;
      }
      return brush;
    };
    brush.empty = function() {
      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
  var d3_time_formatUtc = d3_time_format.utc;
  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  d3_time.second = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3_time.seconds = d3_time.second.range;
  d3_time.seconds.utc = d3_time.second.utc.range;
  d3_time.minute = d3_time_interval(function(date) {
    return new d3_date(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3_time.minutes = d3_time.minute.range;
  d3_time.minutes.utc = d3_time.minute.utc.range;
  d3_time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3_time.hours = d3_time.hour.range;
  d3_time.hours.utc = d3_time.hour.utc.range;
  d3_time.month = d3_time_interval(function(date) {
    date = d3_time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3_time.months = d3_time.month.range;
  d3_time.months.utc = d3_time.month.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    function tickMethod(extent, count) {
      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
        return d / 31536e6;
      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
    }
    scale.nice = function(interval, skip) {
      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
      if (method) interval = method[0], skip = method[1];
      function skipped(date) {
        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
      }
      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
        floor: function(date) {
          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
          return date;
        },
        ceil: function(date) {
          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
          return date;
        }
      } : interval));
    };
    scale.ticks = function(interval, skip) {
      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
        range: interval
      }, skip ];
      if (method) interval = method[0], skip = method[1];
      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
    return d.getMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getMinutes();
  } ], [ "%I %p", function(d) {
    return d.getHours();
  } ], [ "%a %d", function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getDate() != 1;
  } ], [ "%B", function(d) {
    return d.getMonth();
  } ], [ "%Y", d3_true ] ]);
  var d3_time_scaleMilliseconds = {
    range: function(start, stop, step) {
      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
    },
    floor: d3_identity,
    ceil: d3_identity
  };
  d3_time_scaleLocalMethods.year = d3_time.year;
  d3_time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUtcMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUtcFormat = d3_time_formatUtc.multi([ [ ".%L", function(d) {
    return d.getUTCMilliseconds();
  } ], [ ":%S", function(d) {
    return d.getUTCSeconds();
  } ], [ "%I:%M", function(d) {
    return d.getUTCMinutes();
  } ], [ "%I %p", function(d) {
    return d.getUTCHours();
  } ], [ "%a %d", function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ "%b %d", function(d) {
    return d.getUTCDate() != 1;
  } ], [ "%B", function(d) {
    return d.getUTCMonth();
  } ], [ "%Y", d3_true ] ]);
  d3_time_scaleUtcMethods.year = d3_time.year.utc;
  d3_time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUtcMethods, d3_time_scaleUtcFormat);
  };
  d3.text = d3_xhrType(function(request) {
    return request.responseText;
  });
  d3.json = function(url, callback) {
    return d3_xhr(url, "application/json", d3_json, callback);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3_xhr(url, "text/html", d3_html, callback);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = d3_xhrType(function(request) {
    return request.responseXML;
  });
  if (typeof define === "function" && define.amd) define(d3); else if (typeof module === "object" && module.exports) module.exports = d3;
  this.d3 = d3;
}();
(function(exports){
crossfilter.version = "1.3.11";
function crossfilter_identity(d) {
  return d;
}
crossfilter.permute = permute;

function permute(array, index) {
  for (var i = 0, n = index.length, copy = new Array(n); i < n; ++i) {
    copy[i] = array[index[i]];
  }
  return copy;
}
var bisect = crossfilter.bisect = bisect_by(crossfilter_identity);

bisect.by = bisect_by;

function bisect_by(f) {

  // Locate the insertion point for x in a to maintain sorted order. The
  // arguments lo and hi may be used to specify a subset of the array which
  // should be considered; by default the entire array is used. If x is already
  // present in a, the insertion point will be before (to the left of) any
  // existing entries. The return value is suitable for use as the first
  // argument to `array.splice` assuming that a is already sorted.
  //
  // The returned insertion point i partitions the array a into two halves so
  // that all v < x for v in a[lo:i] for the left side and all v >= x for v in
  // a[i:hi] for the right side.
  function bisectLeft(a, x, lo, hi) {
    while (lo < hi) {
      var mid = lo + hi >>> 1;
      if (f(a[mid]) < x) lo = mid + 1;
      else hi = mid;
    }
    return lo;
  }

  // Similar to bisectLeft, but returns an insertion point which comes after (to
  // the right of) any existing entries of x in a.
  //
  // The returned insertion point i partitions the array into two halves so that
  // all v <= x for v in a[lo:i] for the left side and all v > x for v in
  // a[i:hi] for the right side.
  function bisectRight(a, x, lo, hi) {
    while (lo < hi) {
      var mid = lo + hi >>> 1;
      if (x < f(a[mid])) hi = mid;
      else lo = mid + 1;
    }
    return lo;
  }

  bisectRight.right = bisectRight;
  bisectRight.left = bisectLeft;
  return bisectRight;
}
var heap = crossfilter.heap = heap_by(crossfilter_identity);

heap.by = heap_by;

function heap_by(f) {

  // Builds a binary heap within the specified array a[lo:hi]. The heap has the
  // property such that the parent a[lo+i] is always less than or equal to its
  // two children: a[lo+2*i+1] and a[lo+2*i+2].
  function heap(a, lo, hi) {
    var n = hi - lo,
        i = (n >>> 1) + 1;
    while (--i > 0) sift(a, i, n, lo);
    return a;
  }

  // Sorts the specified array a[lo:hi] in descending order, assuming it is
  // already a heap.
  function sort(a, lo, hi) {
    var n = hi - lo,
        t;
    while (--n > 0) t = a[lo], a[lo] = a[lo + n], a[lo + n] = t, sift(a, 1, n, lo);
    return a;
  }

  // Sifts the element a[lo+i-1] down the heap, where the heap is the contiguous
  // slice of array a[lo:lo+n]. This method can also be used to update the heap
  // incrementally, without incurring the full cost of reconstructing the heap.
  function sift(a, i, n, lo) {
    var d = a[--lo + i],
        x = f(d),
        child;
    while ((child = i << 1) <= n) {
      if (child < n && f(a[lo + child]) > f(a[lo + child + 1])) child++;
      if (x <= f(a[lo + child])) break;
      a[lo + i] = a[lo + child];
      i = child;
    }
    a[lo + i] = d;
  }

  heap.sort = sort;
  return heap;
}
var heapselect = crossfilter.heapselect = heapselect_by(crossfilter_identity);

heapselect.by = heapselect_by;

function heapselect_by(f) {
  var heap = heap_by(f);

  // Returns a new array containing the top k elements in the array a[lo:hi].
  // The returned array is not sorted, but maintains the heap property. If k is
  // greater than hi - lo, then fewer than k elements will be returned. The
  // order of elements in a is unchanged by this operation.
  function heapselect(a, lo, hi, k) {
    var queue = new Array(k = Math.min(hi - lo, k)),
        min,
        i,
        x,
        d;

    for (i = 0; i < k; ++i) queue[i] = a[lo++];
    heap(queue, 0, k);

    if (lo < hi) {
      min = f(queue[0]);
      do {
        if (x = f(d = a[lo]) > min) {
          queue[0] = d;
          min = f(heap(queue, 0, k)[0]);
        }
      } while (++lo < hi);
    }

    return queue;
  }

  return heapselect;
}
var insertionsort = crossfilter.insertionsort = insertionsort_by(crossfilter_identity);

insertionsort.by = insertionsort_by;

function insertionsort_by(f) {

  function insertionsort(a, lo, hi) {
    for (var i = lo + 1; i < hi; ++i) {
      for (var j = i, t = a[i], x = f(t); j > lo && f(a[j - 1]) > x; --j) {
        a[j] = a[j - 1];
      }
      a[j] = t;
    }
    return a;
  }

  return insertionsort;
}
// Algorithm designed by Vladimir Yaroslavskiy.
// Implementation based on the Dart project; see lib/dart/LICENSE for details.

var quicksort = crossfilter.quicksort = quicksort_by(crossfilter_identity);

quicksort.by = quicksort_by;

function quicksort_by(f) {
  var insertionsort = insertionsort_by(f);

  function sort(a, lo, hi) {
    return (hi - lo < quicksort_sizeThreshold
        ? insertionsort
        : quicksort)(a, lo, hi);
  }

  function quicksort(a, lo, hi) {
    // Compute the two pivots by looking at 5 elements.
    var sixth = (hi - lo) / 6 | 0,
        i1 = lo + sixth,
        i5 = hi - 1 - sixth,
        i3 = lo + hi - 1 >> 1,  // The midpoint.
        i2 = i3 - sixth,
        i4 = i3 + sixth;

    var e1 = a[i1], x1 = f(e1),
        e2 = a[i2], x2 = f(e2),
        e3 = a[i3], x3 = f(e3),
        e4 = a[i4], x4 = f(e4),
        e5 = a[i5], x5 = f(e5);

    var t;

    // Sort the selected 5 elements using a sorting network.
    if (x1 > x2) t = e1, e1 = e2, e2 = t, t = x1, x1 = x2, x2 = t;
    if (x4 > x5) t = e4, e4 = e5, e5 = t, t = x4, x4 = x5, x5 = t;
    if (x1 > x3) t = e1, e1 = e3, e3 = t, t = x1, x1 = x3, x3 = t;
    if (x2 > x3) t = e2, e2 = e3, e3 = t, t = x2, x2 = x3, x3 = t;
    if (x1 > x4) t = e1, e1 = e4, e4 = t, t = x1, x1 = x4, x4 = t;
    if (x3 > x4) t = e3, e3 = e4, e4 = t, t = x3, x3 = x4, x4 = t;
    if (x2 > x5) t = e2, e2 = e5, e5 = t, t = x2, x2 = x5, x5 = t;
    if (x2 > x3) t = e2, e2 = e3, e3 = t, t = x2, x2 = x3, x3 = t;
    if (x4 > x5) t = e4, e4 = e5, e5 = t, t = x4, x4 = x5, x5 = t;

    var pivot1 = e2, pivotValue1 = x2,
        pivot2 = e4, pivotValue2 = x4;

    // e2 and e4 have been saved in the pivot variables. They will be written
    // back, once the partitioning is finished.
    a[i1] = e1;
    a[i2] = a[lo];
    a[i3] = e3;
    a[i4] = a[hi - 1];
    a[i5] = e5;

    var less = lo + 1,   // First element in the middle partition.
        great = hi - 2;  // Last element in the middle partition.

    // Note that for value comparison, <, <=, >= and > coerce to a primitive via
    // Object.prototype.valueOf; == and === do not, so in order to be consistent
    // with natural order (such as for Date objects), we must do two compares.
    var pivotsEqual = pivotValue1 <= pivotValue2 && pivotValue1 >= pivotValue2;
    if (pivotsEqual) {

      // Degenerated case where the partitioning becomes a dutch national flag
      // problem.
      //
      // [ |  < pivot  | == pivot | unpartitioned | > pivot  | ]
      //  ^             ^          ^             ^            ^
      // left         less         k           great         right
      //
      // a[left] and a[right] are undefined and are filled after the
      // partitioning.
      //
      // Invariants:
      //   1) for x in ]left, less[ : x < pivot.
      //   2) for x in [less, k[ : x == pivot.
      //   3) for x in ]great, right[ : x > pivot.
      for (var k = less; k <= great; ++k) {
        var ek = a[k], xk = f(ek);
        if (xk < pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          ++less;
        } else if (xk > pivotValue1) {

          // Find the first element <= pivot in the range [k - 1, great] and
          // put [:ek:] there. We know that such an element must exist:
          // When k == less, then el3 (which is equal to pivot) lies in the
          // interval. Otherwise a[k - 1] == pivot and the search stops at k-1.
          // Note that in the latter case invariant 2 will be violated for a
          // short amount of time. The invariant will be restored when the
          // pivots are put into their final positions.
          while (true) {
            var greatValue = f(a[great]);
            if (greatValue > pivotValue1) {
              great--;
              // This is the only location in the while-loop where a new
              // iteration is started.
              continue;
            } else if (greatValue < pivotValue1) {
              // Triple exchange.
              a[k] = a[less];
              a[less++] = a[great];
              a[great--] = ek;
              break;
            } else {
              a[k] = a[great];
              a[great--] = ek;
              // Note: if great < k then we will exit the outer loop and fix
              // invariant 2 (which we just violated).
              break;
            }
          }
        }
      }
    } else {

      // We partition the list into three parts:
      //  1. < pivot1
      //  2. >= pivot1 && <= pivot2
      //  3. > pivot2
      //
      // During the loop we have:
      // [ | < pivot1 | >= pivot1 && <= pivot2 | unpartitioned  | > pivot2  | ]
      //  ^            ^                        ^              ^             ^
      // left         less                     k              great        right
      //
      // a[left] and a[right] are undefined and are filled after the
      // partitioning.
      //
      // Invariants:
      //   1. for x in ]left, less[ : x < pivot1
      //   2. for x in [less, k[ : pivot1 <= x && x <= pivot2
      //   3. for x in ]great, right[ : x > pivot2
      for (var k = less; k <= great; k++) {
        var ek = a[k], xk = f(ek);
        if (xk < pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          ++less;
        } else {
          if (xk > pivotValue2) {
            while (true) {
              var greatValue = f(a[great]);
              if (greatValue > pivotValue2) {
                great--;
                if (great < k) break;
                // This is the only location inside the loop where a new
                // iteration is started.
                continue;
              } else {
                // a[great] <= pivot2.
                if (greatValue < pivotValue1) {
                  // Triple exchange.
                  a[k] = a[less];
                  a[less++] = a[great];
                  a[great--] = ek;
                } else {
                  // a[great] >= pivot1.
                  a[k] = a[great];
                  a[great--] = ek;
                }
                break;
              }
            }
          }
        }
      }
    }

    // Move pivots into their final positions.
    // We shrunk the list from both sides (a[left] and a[right] have
    // meaningless values in them) and now we move elements from the first
    // and third partition into these locations so that we can store the
    // pivots.
    a[lo] = a[less - 1];
    a[less - 1] = pivot1;
    a[hi - 1] = a[great + 1];
    a[great + 1] = pivot2;

    // The list is now partitioned into three partitions:
    // [ < pivot1   | >= pivot1 && <= pivot2   |  > pivot2   ]
    //  ^            ^                        ^             ^
    // left         less                     great        right

    // Recursive descent. (Don't include the pivot values.)
    sort(a, lo, less - 1);
    sort(a, great + 2, hi);

    if (pivotsEqual) {
      // All elements in the second partition are equal to the pivot. No
      // need to sort them.
      return a;
    }

    // In theory it should be enough to call _doSort recursively on the second
    // partition.
    // The Android source however removes the pivot elements from the recursive
    // call if the second partition is too large (more than 2/3 of the list).
    if (less < i1 && great > i5) {
      var lessValue, greatValue;
      while ((lessValue = f(a[less])) <= pivotValue1 && lessValue >= pivotValue1) ++less;
      while ((greatValue = f(a[great])) <= pivotValue2 && greatValue >= pivotValue2) --great;

      // Copy paste of the previous 3-way partitioning with adaptions.
      //
      // We partition the list into three parts:
      //  1. == pivot1
      //  2. > pivot1 && < pivot2
      //  3. == pivot2
      //
      // During the loop we have:
      // [ == pivot1 | > pivot1 && < pivot2 | unpartitioned  | == pivot2 ]
      //              ^                      ^              ^
      //            less                     k              great
      //
      // Invariants:
      //   1. for x in [ *, less[ : x == pivot1
      //   2. for x in [less, k[ : pivot1 < x && x < pivot2
      //   3. for x in ]great, * ] : x == pivot2
      for (var k = less; k <= great; k++) {
        var ek = a[k], xk = f(ek);
        if (xk <= pivotValue1 && xk >= pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          less++;
        } else {
          if (xk <= pivotValue2 && xk >= pivotValue2) {
            while (true) {
              var greatValue = f(a[great]);
              if (greatValue <= pivotValue2 && greatValue >= pivotValue2) {
                great--;
                if (great < k) break;
                // This is the only location inside the loop where a new
                // iteration is started.
                continue;
              } else {
                // a[great] < pivot2.
                if (greatValue < pivotValue1) {
                  // Triple exchange.
                  a[k] = a[less];
                  a[less++] = a[great];
                  a[great--] = ek;
                } else {
                  // a[great] == pivot1.
                  a[k] = a[great];
                  a[great--] = ek;
                }
                break;
              }
            }
          }
        }
      }
    }

    // The second partition has now been cleared of pivot elements and looks
    // as follows:
    // [  *  |  > pivot1 && < pivot2  | * ]
    //        ^                      ^
    //       less                  great
    // Sort the second partition using recursive descent.

    // The second partition looks as follows:
    // [  *  |  >= pivot1 && <= pivot2  | * ]
    //        ^                        ^
    //       less                    great
    // Simply sort it by recursive descent.

    return sort(a, less, great + 1);
  }

  return sort;
}

var quicksort_sizeThreshold = 32;
var crossfilter_array8 = crossfilter_arrayUntyped,
    crossfilter_array16 = crossfilter_arrayUntyped,
    crossfilter_array32 = crossfilter_arrayUntyped,
    crossfilter_arrayLengthen = crossfilter_arrayLengthenUntyped,
    crossfilter_arrayWiden = crossfilter_arrayWidenUntyped;

if (typeof Uint8Array !== "undefined") {
  crossfilter_array8 = function(n) { return new Uint8Array(n); };
  crossfilter_array16 = function(n) { return new Uint16Array(n); };
  crossfilter_array32 = function(n) { return new Uint32Array(n); };

  crossfilter_arrayLengthen = function(array, length) {
    if (array.length >= length) return array;
    var copy = new array.constructor(length);
    copy.set(array);
    return copy;
  };

  crossfilter_arrayWiden = function(array, width) {
    var copy;
    switch (width) {
      case 16: copy = crossfilter_array16(array.length); break;
      case 32: copy = crossfilter_array32(array.length); break;
      default: throw new Error("invalid array width!");
    }
    copy.set(array);
    return copy;
  };
}

function crossfilter_arrayUntyped(n) {
  var array = new Array(n), i = -1;
  while (++i < n) array[i] = 0;
  return array;
}

function crossfilter_arrayLengthenUntyped(array, length) {
  var n = array.length;
  while (n < length) array[n++] = 0;
  return array;
}

function crossfilter_arrayWidenUntyped(array, width) {
  if (width > 32) throw new Error("invalid array width!");
  return array;
}
function crossfilter_filterExact(bisect, value) {
  return function(values) {
    var n = values.length;
    return [bisect.left(values, value, 0, n), bisect.right(values, value, 0, n)];
  };
}

function crossfilter_filterRange(bisect, range) {
  var min = range[0],
      max = range[1];
  return function(values) {
    var n = values.length;
    return [bisect.left(values, min, 0, n), bisect.left(values, max, 0, n)];
  };
}

function crossfilter_filterAll(values) {
  return [0, values.length];
}
function crossfilter_null() {
  return null;
}
function crossfilter_zero() {
  return 0;
}
function crossfilter_reduceIncrement(p) {
  return p + 1;
}

function crossfilter_reduceDecrement(p) {
  return p - 1;
}

function crossfilter_reduceAdd(f) {
  return function(p, v) {
    return p + +f(v);
  };
}

function crossfilter_reduceSubtract(f) {
  return function(p, v) {
    return p - f(v);
  };
}
exports.crossfilter = crossfilter;

function crossfilter() {
  var crossfilter = {
    add: add,
    remove: removeData,
    dimension: dimension,
    groupAll: groupAll,
    size: size
  };

  var data = [], // the records
      n = 0, // the number of records; data.length
      m = 0, // a bit mask representing which dimensions are in use
      M = 8, // number of dimensions that can fit in `filters`
      filters = crossfilter_array8(0), // M bits per record; 1 is filtered out
      filterListeners = [], // when the filters change
      dataListeners = [], // when data is added
      removeDataListeners = []; // when data is removed

  // Adds the specified new records to this crossfilter.
  function add(newData) {
    var n0 = n,
        n1 = newData.length;

    // If there's actually new data to add…
    // Merge the new data into the existing data.
    // Lengthen the filter bitset to handle the new records.
    // Notify listeners (dimensions and groups) that new data is available.
    if (n1) {
      data = data.concat(newData);
      filters = crossfilter_arrayLengthen(filters, n += n1);
      dataListeners.forEach(function(l) { l(newData, n0, n1); });
    }

    return crossfilter;
  }

  // Removes all records that match the current filters.
  function removeData() {
    var newIndex = crossfilter_index(n, n),
        removed = [];
    for (var i = 0, j = 0; i < n; ++i) {
      if (filters[i]) newIndex[i] = j++;
      else removed.push(i);
    }

    // Remove all matching records from groups.
    filterListeners.forEach(function(l) { l(0, [], removed); });

    // Update indexes.
    removeDataListeners.forEach(function(l) { l(newIndex); });

    // Remove old filters and data by overwriting.
    for (var i = 0, j = 0, k; i < n; ++i) {
      if (k = filters[i]) {
        if (i !== j) filters[j] = k, data[j] = data[i];
        ++j;
      }
    }
    data.length = j;
    while (n > j) filters[--n] = 0;
  }

  // Adds a new dimension with the specified value accessor function.
  function dimension(value) {
    var dimension = {
      filter: filter,
      filterExact: filterExact,
      filterRange: filterRange,
      filterFunction: filterFunction,
      filterAll: filterAll,
      top: top,
      bottom: bottom,
      group: group,
      groupAll: groupAll,
      dispose: dispose,
      remove: dispose // for backwards-compatibility
    };

    var one = ~m & -~m, // lowest unset bit as mask, e.g., 00001000
        zero = ~one, // inverted one, e.g., 11110111
        values, // sorted, cached array
        index, // value rank ↦ object id
        newValues, // temporary array storing newly-added values
        newIndex, // temporary array storing newly-added index
        sort = quicksort_by(function(i) { return newValues[i]; }),
        refilter = crossfilter_filterAll, // for recomputing filter
        refilterFunction, // the custom filter function in use
        indexListeners = [], // when data is added
        dimensionGroups = [],
        lo0 = 0,
        hi0 = 0;

    // Updating a dimension is a two-stage process. First, we must update the
    // associated filters for the newly-added records. Once all dimensions have
    // updated their filters, the groups are notified to update.
    dataListeners.unshift(preAdd);
    dataListeners.push(postAdd);

    removeDataListeners.push(removeData);

    // Incorporate any existing data into this dimension, and make sure that the
    // filter bitset is wide enough to handle the new dimension.
    m |= one;
    if (M >= 32 ? !one : m & (1 << M) - 1) {
      filters = crossfilter_arrayWiden(filters, M <<= 1);
    }
    preAdd(data, 0, n);
    postAdd(data, 0, n);

    // Incorporates the specified new records into this dimension.
    // This function is responsible for updating filters, values, and index.
    function preAdd(newData, n0, n1) {

      // Permute new values into natural order using a sorted index.
      newValues = newData.map(value);
      newIndex = sort(crossfilter_range(n1), 0, n1);
      newValues = permute(newValues, newIndex);

      // Bisect newValues to determine which new records are selected.
      var bounds = refilter(newValues), lo1 = bounds[0], hi1 = bounds[1], i;
      if (refilterFunction) {
        for (i = 0; i < n1; ++i) {
          if (!refilterFunction(newValues[i], i)) filters[newIndex[i] + n0] |= one;
        }
      } else {
        for (i = 0; i < lo1; ++i) filters[newIndex[i] + n0] |= one;
        for (i = hi1; i < n1; ++i) filters[newIndex[i] + n0] |= one;
      }

      // If this dimension previously had no data, then we don't need to do the
      // more expensive merge operation; use the new values and index as-is.
      if (!n0) {
        values = newValues;
        index = newIndex;
        lo0 = lo1;
        hi0 = hi1;
        return;
      }

      var oldValues = values,
          oldIndex = index,
          i0 = 0,
          i1 = 0;

      // Otherwise, create new arrays into which to merge new and old.
      values = new Array(n);
      index = crossfilter_index(n, n);

      // Merge the old and new sorted values, and old and new index.
      for (i = 0; i0 < n0 && i1 < n1; ++i) {
        if (oldValues[i0] < newValues[i1]) {
          values[i] = oldValues[i0];
          index[i] = oldIndex[i0++];
        } else {
          values[i] = newValues[i1];
          index[i] = newIndex[i1++] + n0;
        }
      }

      // Add any remaining old values.
      for (; i0 < n0; ++i0, ++i) {
        values[i] = oldValues[i0];
        index[i] = oldIndex[i0];
      }

      // Add any remaining new values.
      for (; i1 < n1; ++i1, ++i) {
        values[i] = newValues[i1];
        index[i] = newIndex[i1] + n0;
      }

      // Bisect again to recompute lo0 and hi0.
      bounds = refilter(values), lo0 = bounds[0], hi0 = bounds[1];
    }

    // When all filters have updated, notify index listeners of the new values.
    function postAdd(newData, n0, n1) {
      indexListeners.forEach(function(l) { l(newValues, newIndex, n0, n1); });
      newValues = newIndex = null;
    }

    function removeData(reIndex) {
      for (var i = 0, j = 0, k; i < n; ++i) {
        if (filters[k = index[i]]) {
          if (i !== j) values[j] = values[i];
          index[j] = reIndex[k];
          ++j;
        }
      }
      values.length = j;
      while (j < n) index[j++] = 0;

      // Bisect again to recompute lo0 and hi0.
      var bounds = refilter(values);
      lo0 = bounds[0], hi0 = bounds[1];
    }

    // Updates the selected values based on the specified bounds [lo, hi].
    // This implementation is used by all the public filter methods.
    function filterIndexBounds(bounds) {
      var lo1 = bounds[0],
          hi1 = bounds[1];

      if (refilterFunction) {
        refilterFunction = null;
        filterIndexFunction(function(d, i) { return lo1 <= i && i < hi1; });
        lo0 = lo1;
        hi0 = hi1;
        return dimension;
      }

      var i,
          j,
          k,
          added = [],
          removed = [];

      // Fast incremental update based on previous lo index.
      if (lo1 < lo0) {
        for (i = lo1, j = Math.min(lo0, hi1); i < j; ++i) {
          filters[k = index[i]] ^= one;
          added.push(k);
        }
      } else if (lo1 > lo0) {
        for (i = lo0, j = Math.min(lo1, hi0); i < j; ++i) {
          filters[k = index[i]] ^= one;
          removed.push(k);
        }
      }

      // Fast incremental update based on previous hi index.
      if (hi1 > hi0) {
        for (i = Math.max(lo1, hi0), j = hi1; i < j; ++i) {
          filters[k = index[i]] ^= one;
          added.push(k);
        }
      } else if (hi1 < hi0) {
        for (i = Math.max(lo0, hi1), j = hi0; i < j; ++i) {
          filters[k = index[i]] ^= one;
          removed.push(k);
        }
      }

      lo0 = lo1;
      hi0 = hi1;
      filterListeners.forEach(function(l) { l(one, added, removed); });
      return dimension;
    }

    // Filters this dimension using the specified range, value, or null.
    // If the range is null, this is equivalent to filterAll.
    // If the range is an array, this is equivalent to filterRange.
    // Otherwise, this is equivalent to filterExact.
    function filter(range) {
      return range == null
          ? filterAll() : Array.isArray(range)
          ? filterRange(range) : typeof range === "function"
          ? filterFunction(range)
          : filterExact(range);
    }

    // Filters this dimension to select the exact value.
    function filterExact(value) {
      return filterIndexBounds((refilter = crossfilter_filterExact(bisect, value))(values));
    }

    // Filters this dimension to select the specified range [lo, hi].
    // The lower bound is inclusive, and the upper bound is exclusive.
    function filterRange(range) {
      return filterIndexBounds((refilter = crossfilter_filterRange(bisect, range))(values));
    }

    // Clears any filters on this dimension.
    function filterAll() {
      return filterIndexBounds((refilter = crossfilter_filterAll)(values));
    }

    // Filters this dimension using an arbitrary function.
    function filterFunction(f) {
      refilter = crossfilter_filterAll;

      filterIndexFunction(refilterFunction = f);

      lo0 = 0;
      hi0 = n;

      return dimension;
    }

    function filterIndexFunction(f) {
      var i,
          k,
          x,
          added = [],
          removed = [];

      for (i = 0; i < n; ++i) {
        if (!(filters[k = index[i]] & one) ^ !!(x = f(values[i], i))) {
          if (x) filters[k] &= zero, added.push(k);
          else filters[k] |= one, removed.push(k);
        }
      }
      filterListeners.forEach(function(l) { l(one, added, removed); });
    }

    // Returns the top K selected records based on this dimension's order.
    // Note: observes this dimension's filter, unlike group and groupAll.
    function top(k) {
      var array = [],
          i = hi0,
          j;

      while (--i >= lo0 && k > 0) {
        if (!filters[j = index[i]]) {
          array.push(data[j]);
          --k;
        }
      }

      return array;
    }

    // Returns the bottom K selected records based on this dimension's order.
    // Note: observes this dimension's filter, unlike group and groupAll.
    function bottom(k) {
      var array = [],
          i = lo0,
          j;

      while (i < hi0 && k > 0) {
        if (!filters[j = index[i]]) {
          array.push(data[j]);
          --k;
        }
        i++;
      }

      return array;
    }

    // Adds a new group to this dimension, using the specified key function.
    function group(key) {
      var group = {
        top: top,
        all: all,
        reduce: reduce,
        reduceCount: reduceCount,
        reduceSum: reduceSum,
        order: order,
        orderNatural: orderNatural,
        size: size,
        dispose: dispose,
        remove: dispose // for backwards-compatibility
      };

      // Ensure that this group will be removed when the dimension is removed.
      dimensionGroups.push(group);

      var groups, // array of {key, value}
          groupIndex, // object id ↦ group id
          groupWidth = 8,
          groupCapacity = crossfilter_capacity(groupWidth),
          k = 0, // cardinality
          select,
          heap,
          reduceAdd,
          reduceRemove,
          reduceInitial,
          update = crossfilter_null,
          reset = crossfilter_null,
          resetNeeded = true,
          groupAll = key === crossfilter_null;

      if (arguments.length < 1) key = crossfilter_identity;

      // The group listens to the crossfilter for when any dimension changes, so
      // that it can update the associated reduce values. It must also listen to
      // the parent dimension for when data is added, and compute new keys.
      filterListeners.push(update);
      indexListeners.push(add);
      removeDataListeners.push(removeData);

      // Incorporate any existing data into the grouping.
      add(values, index, 0, n);

      // Incorporates the specified new values into this group.
      // This function is responsible for updating groups and groupIndex.
      function add(newValues, newIndex, n0, n1) {
        var oldGroups = groups,
            reIndex = crossfilter_index(k, groupCapacity),
            add = reduceAdd,
            initial = reduceInitial,
            k0 = k, // old cardinality
            i0 = 0, // index of old group
            i1 = 0, // index of new record
            j, // object id
            g0, // old group
            x0, // old key
            x1, // new key
            g, // group to add
            x; // key of group to add

        // If a reset is needed, we don't need to update the reduce values.
        if (resetNeeded) add = initial = crossfilter_null;

        // Reset the new groups (k is a lower bound).
        // Also, make sure that groupIndex exists and is long enough.
        groups = new Array(k), k = 0;
        groupIndex = k0 > 1 ? crossfilter_arrayLengthen(groupIndex, n) : crossfilter_index(n, groupCapacity);

        // Get the first old key (x0 of g0), if it exists.
        if (k0) x0 = (g0 = oldGroups[0]).key;

        // Find the first new key (x1), skipping NaN keys.
        while (i1 < n1 && !((x1 = key(newValues[i1])) >= x1)) ++i1;

        // While new keys remain…
        while (i1 < n1) {

          // Determine the lesser of the two current keys; new and old.
          // If there are no old keys remaining, then always add the new key.
          if (g0 && x0 <= x1) {
            g = g0, x = x0;

            // Record the new index of the old group.
            reIndex[i0] = k;

            // Retrieve the next old key.
            if (g0 = oldGroups[++i0]) x0 = g0.key;
          } else {
            g = {key: x1, value: initial()}, x = x1;
          }

          // Add the lesser group.
          groups[k] = g;

          // Add any selected records belonging to the added group, while
          // advancing the new key and populating the associated group index.
          while (!(x1 > x)) {
            groupIndex[j = newIndex[i1] + n0] = k;
            if (!(filters[j] & zero)) g.value = add(g.value, data[j]);
            if (++i1 >= n1) break;
            x1 = key(newValues[i1]);
          }

          groupIncrement();
        }

        // Add any remaining old groups that were greater than all new keys.
        // No incremental reduce is needed; these groups have no new records.
        // Also record the new index of the old group.
        while (i0 < k0) {
          groups[reIndex[i0] = k] = oldGroups[i0++];
          groupIncrement();
        }

        // If we added any new groups before any old groups,
        // update the group index of all the old records.
        if (k > i0) for (i0 = 0; i0 < n0; ++i0) {
          groupIndex[i0] = reIndex[groupIndex[i0]];
        }

        // Modify the update and reset behavior based on the cardinality.
        // If the cardinality is less than or equal to one, then the groupIndex
        // is not needed. If the cardinality is zero, then there are no records
        // and therefore no groups to update or reset. Note that we also must
        // change the registered listener to point to the new method.
        j = filterListeners.indexOf(update);
        if (k > 1) {
          update = updateMany;
          reset = resetMany;
        } else {
          if (!k && groupAll) {
            k = 1;
            groups = [{key: null, value: initial()}];
          }
          if (k === 1) {
            update = updateOne;
            reset = resetOne;
          } else {
            update = crossfilter_null;
            reset = crossfilter_null;
          }
          groupIndex = null;
        }
        filterListeners[j] = update;

        // Count the number of added groups,
        // and widen the group index as needed.
        function groupIncrement() {
          if (++k === groupCapacity) {
            reIndex = crossfilter_arrayWiden(reIndex, groupWidth <<= 1);
            groupIndex = crossfilter_arrayWiden(groupIndex, groupWidth);
            groupCapacity = crossfilter_capacity(groupWidth);
          }
        }
      }

      function removeData() {
        if (k > 1) {
          var oldK = k,
              oldGroups = groups,
              seenGroups = crossfilter_index(oldK, oldK);

          // Filter out non-matches by copying matching group index entries to
          // the beginning of the array.
          for (var i = 0, j = 0; i < n; ++i) {
            if (filters[i]) {
              seenGroups[groupIndex[j] = groupIndex[i]] = 1;
              ++j;
            }
          }

          // Reassemble groups including only those groups that were referred
          // to by matching group index entries.  Note the new group index in
          // seenGroups.
          groups = [], k = 0;
          for (i = 0; i < oldK; ++i) {
            if (seenGroups[i]) {
              seenGroups[i] = k++;
              groups.push(oldGroups[i]);
            }
          }

          if (k > 1) {
            // Reindex the group index using seenGroups to find the new index.
            for (var i = 0; i < j; ++i) groupIndex[i] = seenGroups[groupIndex[i]];
          } else {
            groupIndex = null;
          }
          filterListeners[filterListeners.indexOf(update)] = k > 1
              ? (reset = resetMany, update = updateMany)
              : k === 1 ? (reset = resetOne, update = updateOne)
              : reset = update = crossfilter_null;
        } else if (k === 1) {
          if (groupAll) return;
          for (var i = 0; i < n; ++i) if (filters[i]) return;
          groups = [], k = 0;
          filterListeners[filterListeners.indexOf(update)] =
          update = reset = crossfilter_null;
        }
      }

      // Reduces the specified selected or deselected records.
      // This function is only used when the cardinality is greater than 1.
      function updateMany(filterOne, added, removed) {
        if (filterOne === one || resetNeeded) return;

        var i,
            k,
            n,
            g;

        // Add the added values.
        for (i = 0, n = added.length; i < n; ++i) {
          if (!(filters[k = added[i]] & zero)) {
            g = groups[groupIndex[k]];
            g.value = reduceAdd(g.value, data[k]);
          }
        }

        // Remove the removed values.
        for (i = 0, n = removed.length; i < n; ++i) {
          if ((filters[k = removed[i]] & zero) === filterOne) {
            g = groups[groupIndex[k]];
            g.value = reduceRemove(g.value, data[k]);
          }
        }
      }

      // Reduces the specified selected or deselected records.
      // This function is only used when the cardinality is 1.
      function updateOne(filterOne, added, removed) {
        if (filterOne === one || resetNeeded) return;

        var i,
            k,
            n,
            g = groups[0];

        // Add the added values.
        for (i = 0, n = added.length; i < n; ++i) {
          if (!(filters[k = added[i]] & zero)) {
            g.value = reduceAdd(g.value, data[k]);
          }
        }

        // Remove the removed values.
        for (i = 0, n = removed.length; i < n; ++i) {
          if ((filters[k = removed[i]] & zero) === filterOne) {
            g.value = reduceRemove(g.value, data[k]);
          }
        }
      }

      // Recomputes the group reduce values from scratch.
      // This function is only used when the cardinality is greater than 1.
      function resetMany() {
        var i,
            g;

        // Reset all group values.
        for (i = 0; i < k; ++i) {
          groups[i].value = reduceInitial();
        }

        // Add any selected records.
        for (i = 0; i < n; ++i) {
          if (!(filters[i] & zero)) {
            g = groups[groupIndex[i]];
            g.value = reduceAdd(g.value, data[i]);
          }
        }
      }

      // Recomputes the group reduce values from scratch.
      // This function is only used when the cardinality is 1.
      function resetOne() {
        var i,
            g = groups[0];

        // Reset the singleton group values.
        g.value = reduceInitial();

        // Add any selected records.
        for (i = 0; i < n; ++i) {
          if (!(filters[i] & zero)) {
            g.value = reduceAdd(g.value, data[i]);
          }
        }
      }

      // Returns the array of group values, in the dimension's natural order.
      function all() {
        if (resetNeeded) reset(), resetNeeded = false;
        return groups;
      }

      // Returns a new array containing the top K group values, in reduce order.
      function top(k) {
        var top = select(all(), 0, groups.length, k);
        return heap.sort(top, 0, top.length);
      }

      // Sets the reduce behavior for this group to use the specified functions.
      // This method lazily recomputes the reduce values, waiting until needed.
      function reduce(add, remove, initial) {
        reduceAdd = add;
        reduceRemove = remove;
        reduceInitial = initial;
        resetNeeded = true;
        return group;
      }

      // A convenience method for reducing by count.
      function reduceCount() {
        return reduce(crossfilter_reduceIncrement, crossfilter_reduceDecrement, crossfilter_zero);
      }

      // A convenience method for reducing by sum(value).
      function reduceSum(value) {
        return reduce(crossfilter_reduceAdd(value), crossfilter_reduceSubtract(value), crossfilter_zero);
      }

      // Sets the reduce order, using the specified accessor.
      function order(value) {
        select = heapselect_by(valueOf);
        heap = heap_by(valueOf);
        function valueOf(d) { return value(d.value); }
        return group;
      }

      // A convenience method for natural ordering by reduce value.
      function orderNatural() {
        return order(crossfilter_identity);
      }

      // Returns the cardinality of this group, irrespective of any filters.
      function size() {
        return k;
      }

      // Removes this group and associated event listeners.
      function dispose() {
        var i = filterListeners.indexOf(update);
        if (i >= 0) filterListeners.splice(i, 1);
        i = indexListeners.indexOf(add);
        if (i >= 0) indexListeners.splice(i, 1);
        i = removeDataListeners.indexOf(removeData);
        if (i >= 0) removeDataListeners.splice(i, 1);
        return group;
      }

      return reduceCount().orderNatural();
    }

    // A convenience function for generating a singleton group.
    function groupAll() {
      var g = group(crossfilter_null), all = g.all;
      delete g.all;
      delete g.top;
      delete g.order;
      delete g.orderNatural;
      delete g.size;
      g.value = function() { return all()[0].value; };
      return g;
    }

    // Removes this dimension and associated groups and event listeners.
    function dispose() {
      dimensionGroups.forEach(function(group) { group.dispose(); });
      var i = dataListeners.indexOf(preAdd);
      if (i >= 0) dataListeners.splice(i, 1);
      i = dataListeners.indexOf(postAdd);
      if (i >= 0) dataListeners.splice(i, 1);
      i = removeDataListeners.indexOf(removeData);
      if (i >= 0) removeDataListeners.splice(i, 1);
      m &= zero;
      return filterAll();
    }

    return dimension;
  }

  // A convenience method for groupAll on a dummy dimension.
  // This implementation can be optimized since it always has cardinality 1.
  function groupAll() {
    var group = {
      reduce: reduce,
      reduceCount: reduceCount,
      reduceSum: reduceSum,
      value: value,
      dispose: dispose,
      remove: dispose // for backwards-compatibility
    };

    var reduceValue,
        reduceAdd,
        reduceRemove,
        reduceInitial,
        resetNeeded = true;

    // The group listens to the crossfilter for when any dimension changes, so
    // that it can update the reduce value. It must also listen to the parent
    // dimension for when data is added.
    filterListeners.push(update);
    dataListeners.push(add);

    // For consistency; actually a no-op since resetNeeded is true.
    add(data, 0, n);

    // Incorporates the specified new values into this group.
    function add(newData, n0) {
      var i;

      if (resetNeeded) return;

      // Add the added values.
      for (i = n0; i < n; ++i) {
        if (!filters[i]) {
          reduceValue = reduceAdd(reduceValue, data[i]);
        }
      }
    }

    // Reduces the specified selected or deselected records.
    function update(filterOne, added, removed) {
      var i,
          k,
          n;

      if (resetNeeded) return;

      // Add the added values.
      for (i = 0, n = added.length; i < n; ++i) {
        if (!filters[k = added[i]]) {
          reduceValue = reduceAdd(reduceValue, data[k]);
        }
      }

      // Remove the removed values.
      for (i = 0, n = removed.length; i < n; ++i) {
        if (filters[k = removed[i]] === filterOne) {
          reduceValue = reduceRemove(reduceValue, data[k]);
        }
      }
    }

    // Recomputes the group reduce value from scratch.
    function reset() {
      var i;

      reduceValue = reduceInitial();

      for (i = 0; i < n; ++i) {
        if (!filters[i]) {
          reduceValue = reduceAdd(reduceValue, data[i]);
        }
      }
    }

    // Sets the reduce behavior for this group to use the specified functions.
    // This method lazily recomputes the reduce value, waiting until needed.
    function reduce(add, remove, initial) {
      reduceAdd = add;
      reduceRemove = remove;
      reduceInitial = initial;
      resetNeeded = true;
      return group;
    }

    // A convenience method for reducing by count.
    function reduceCount() {
      return reduce(crossfilter_reduceIncrement, crossfilter_reduceDecrement, crossfilter_zero);
    }

    // A convenience method for reducing by sum(value).
    function reduceSum(value) {
      return reduce(crossfilter_reduceAdd(value), crossfilter_reduceSubtract(value), crossfilter_zero);
    }

    // Returns the computed reduce value.
    function value() {
      if (resetNeeded) reset(), resetNeeded = false;
      return reduceValue;
    }

    // Removes this group and associated event listeners.
    function dispose() {
      var i = filterListeners.indexOf(update);
      if (i >= 0) filterListeners.splice(i);
      i = dataListeners.indexOf(add);
      if (i >= 0) dataListeners.splice(i);
      return group;
    }

    return reduceCount();
  }

  // Returns the number of records in this crossfilter, irrespective of any filters.
  function size() {
    return n;
  }

  return arguments.length
      ? add(arguments[0])
      : crossfilter;
}

// Returns an array of size n, big enough to store ids up to m.
function crossfilter_index(n, m) {
  return (m < 0x101
      ? crossfilter_array8 : m < 0x10001
      ? crossfilter_array16
      : crossfilter_array32)(n);
}

// Constructs a new array of size n, with sequential values from 0 to n - 1.
function crossfilter_range(n) {
  var range = crossfilter_index(n, n);
  for (var i = -1; ++i < n;) range[i] = i;
  return range;
}

function crossfilter_capacity(w) {
  return w === 8
      ? 0x100 : w === 16
      ? 0x10000
      : 0x100000000;
}
})(typeof exports !== 'undefined' && exports || this);
/*!
 *  dc 2.0.0-alpha.5
 *  http://dc-js.github.io/dc.js/
 *  Copyright 2012 Nick Zhu and other contributors
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

(function() { function _dc(d3, crossfilter) {
'use strict';

/**
#### Version 2.0.0-alpha.5
The entire dc.js library is scoped under the **dc** name space. It does not introduce anything else
into the global name space.
#### Function Chaining
Most dc functions are designed to allow function chaining, meaning they return the current chart
instance whenever it is appropriate. This way chart configuration can be written in the following
style:
```js
chart.width(300)
    .height(300)
    .filter('sunday')
```
The getter forms of functions do not participate in function chaining because they necessarily
return values that are not the chart.  (Although some, such as `.svg` and `.xAxis`, return values
that are chainable d3 objects.)

**/

/*jshint -W062*/
/*jshint -W079*/
var dc = {
    version: '2.0.0-alpha.5',
    constants: {
        CHART_CLASS: 'dc-chart',
        DEBUG_GROUP_CLASS: 'debug',
        STACK_CLASS: 'stack',
        DESELECTED_CLASS: 'deselected',
        SELECTED_CLASS: 'selected',
        NODE_INDEX_NAME: '__index__',
        GROUP_INDEX_NAME: '__group_index__',
        DEFAULT_CHART_GROUP: '__default_chart_group__',
        EVENT_DELAY: 40,
        NEGLIGIBLE_NUMBER: 1e-10
    },
    _renderlet: null
};

dc.chartRegistry = function () {
    // chartGroup:string => charts:array
    var _chartMap = {};

    function initializeChartGroup(group) {
        if (!group) {
            group = dc.constants.DEFAULT_CHART_GROUP;
        }

        if (!_chartMap[group]) {
            _chartMap[group] = [];
        }

        return group;
    }

    return {
        has: function (chart) {
            for (var e in _chartMap) {
                if (_chartMap[e].indexOf(chart) >= 0) {
                    return true;
                }
            }
            return false;
        },

        register: function (chart, group) {
            group = initializeChartGroup(group);
            _chartMap[group].push(chart);
        },

        deregister: function (chart, group) {
            group = initializeChartGroup(group);
            for (var i = 0; i < _chartMap[group].length; i++) {
                if (_chartMap[group][i].anchorName() === chart.anchorName()) {
                    _chartMap[group].splice(i, 1);
                    break;
                }
            }
        },

        clear: function (group) {
            if (group) {
                delete _chartMap[group];
            } else {
                _chartMap = {};
            }
        },

        list: function (group) {
            group = initializeChartGroup(group);
            return _chartMap[group];
        }
    };
}();
/*jshint +W062 */
/*jshint +W079*/

dc.registerChart = function (chart, group) {
    dc.chartRegistry.register(chart, group);
};

dc.deregisterChart = function (chart, group) {
    dc.chartRegistry.deregister(chart, group);
};

dc.hasChart = function (chart) {
    return dc.chartRegistry.has(chart);
};

dc.deregisterAllCharts = function (group) {
    dc.chartRegistry.clear(group);
};

/**
## Utilities
**/

/**
#### dc.filterAll([chartGroup])
Clear all filters on all charts within the given chart group. If the chart group is not given then
only charts that belong to the default chart group will be reset.
**/
dc.filterAll = function (group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].filterAll();
    }
};

/**
#### dc.refocusAll([chartGroup])
Reset zoom level / focus on all charts that belong to the given chart group. If the chart group is
not given then only charts that belong to the default chart group will be reset.
**/
dc.refocusAll = function (group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        if (charts[i].focus) {
            charts[i].focus();
        }
    }
};

/**
#### dc.renderAll([chartGroup])
Re-render all charts belong to the given chart group. If the chart group is not given then only
charts that belong to the default chart group will be re-rendered.
**/
dc.renderAll = function (group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].render();
    }

    if (dc._renderlet !== null) {
        dc._renderlet(group);
    }
};

/**
#### dc.redrawAll([chartGroup])
Redraw all charts belong to the given chart group. If the chart group is not given then only charts
that belong to the default chart group will be re-drawn. Redraw is different from re-render since
when redrawing dc tries to update the graphic incrementally, using transitions, instead of starting
from scratch.
**/
dc.redrawAll = function (group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].redraw();
    }

    if (dc._renderlet !== null) {
        dc._renderlet(group);
    }
};

/**
#### dc.disableTransitions
If this boolean is set truthy, all transitions will be disabled, and changes to the charts will happen
immediately.  Default: false
**/
dc.disableTransitions = false;

dc.transition = function (selections, duration, callback) {
    if (duration <= 0 || duration === undefined || dc.disableTransitions) {
        return selections;
    }

    var s = selections
        .transition()
        .duration(duration);

    if (typeof(callback) === 'function') {
        callback(s);
    }

    return s;
};

dc.units = {};

/**
#### dc.units.integers
`dc.units.integers` is the default value for `xUnits` for the [Coordinate Grid
Chart](#coordinate-grid-chart) and should be used when the x values are a sequence of integers.

It is a function that counts the number of integers in the range supplied in its start and end parameters.

```js
chart.xUnits(dc.units.integers) // already the default
```

**/
dc.units.integers = function (s, e) {
    return Math.abs(e - s);
};

/**
#### dc.units.ordinal
This argument can be passed to the `xUnits` function of the to specify ordinal units for the x
axis. Usually this parameter is used in combination with passing `d3.scale.ordinal()` to `.x`.

It just returns the domain passed to it, which for ordinal charts is an array of all values.

```js
chart.xUnits(dc.units.ordinal)
    .x(d3.scale.ordinal())
```

**/
dc.units.ordinal = function (s, e, domain) {
    return domain;
};

/**
#### dc.units.fp.precision(precision)
This function generates an argument for the [Coordinate Grid Chart's](#coordinate-grid-chart)
`xUnits` function specifying that the x values are floating-point numbers with the given
precision.

The returned function determines how many values at the given precision will fit into the range
supplied in its start and end parameters.

```js
// specify values (and ticks) every 0.1 units
chart.xUnits(dc.units.fp.precision(0.1)
// there are 500 units between 0.5 and 1 if the precision is 0.001
var thousandths = dc.units.fp.precision(0.001);
thousandths(0.5, 1.0) // returns 500
```
**/
dc.units.fp = {};
dc.units.fp.precision = function (precision) {
    var _f = function (s, e) {
        var d = Math.abs((e - s) / _f.resolution);
        if (dc.utils.isNegligible(d - Math.floor(d))) {
            return Math.floor(d);
        } else {
            return Math.ceil(d);
        }
    };
    _f.resolution = precision;
    return _f;
};

dc.round = {};
dc.round.floor = function (n) {
    return Math.floor(n);
};
dc.round.ceil = function (n) {
    return Math.ceil(n);
};
dc.round.round = function (n) {
    return Math.round(n);
};

dc.override = function (obj, functionName, newFunction) {
    var existingFunction = obj[functionName];
    obj['_' + functionName] = existingFunction;
    obj[functionName] = newFunction;
};

dc.renderlet = function (_) {
    if (!arguments.length) {
        return dc._renderlet;
    }
    dc._renderlet = _;
    return dc;
};

dc.instanceOfChart = function (o) {
    return o instanceof Object && o.__dcFlag__ && true;
};

dc.errors = {};

dc.errors.Exception = function (msg) {
    var _msg = msg || 'Unexpected internal error';

    this.message = _msg;

    this.toString = function () {
        return _msg;
    };
};

dc.errors.InvalidStateException = function () {
    dc.errors.Exception.apply(this, arguments);
};

dc.dateFormat = d3.time.format('%m/%d/%Y');

dc.printers = {};

dc.printers.filters = function (filters) {
    var s = '';

    for (var i = 0; i < filters.length; ++i) {
        if (i > 0) {
            s += ', ';
        }
        s += dc.printers.filter(filters[i]);
    }

    return s;
};

dc.printers.filter = function (filter) {
    var s = '';

    if (typeof filter !== 'undefined' && filter !== null) {
        if (filter instanceof Array) {
            if (filter.length >= 2) {
                s = '[' + dc.utils.printSingleValue(filter[0]) + ' -> ' + dc.utils.printSingleValue(filter[1]) + ']';
            } else if (filter.length >= 1) {
                s = dc.utils.printSingleValue(filter[0]);
            }
        } else {
            s = dc.utils.printSingleValue(filter);
        }
    }

    return s;
};

dc.pluck = function (n, f) {
    if (!f) {
        return function (d) { return d[n]; };
    }
    return function (d, i) { return f.call(d, d[n], i); };
};

dc.utils = {};

dc.utils.printSingleValue = function (filter) {
    var s = '' + filter;

    if (filter instanceof Date) {
        s = dc.dateFormat(filter);
    } else if (typeof(filter) === 'string') {
        s = filter;
    } else if (dc.utils.isFloat(filter)) {
        s = dc.utils.printSingleValue.fformat(filter);
    } else if (dc.utils.isInteger(filter)) {
        s = Math.round(filter);
    }

    return s;
};
dc.utils.printSingleValue.fformat = d3.format('.2f');

// FIXME: these assume than any string r is a percentage (whether or not it
// includes %). They also generate strange results if l is a string.
dc.utils.add = function (l, r) {
    if (typeof r === 'string') {
        r = r.replace('%', '');
    }

    if (l instanceof Date) {
        if (typeof r === 'string') {
            r = +r;
        }
        var d = new Date();
        d.setTime(l.getTime());
        d.setDate(l.getDate() + r);
        return d;
    } else if (typeof r === 'string') {
        var percentage = (+r / 100);
        return l > 0 ? l * (1 + percentage) : l * (1 - percentage);
    } else {
        return l + r;
    }
};

dc.utils.subtract = function (l, r) {
    if (typeof r === 'string') {
        r = r.replace('%', '');
    }

    if (l instanceof Date) {
        if (typeof r === 'string') {
            r = +r;
        }
        var d = new Date();
        d.setTime(l.getTime());
        d.setDate(l.getDate() - r);
        return d;
    } else if (typeof r === 'string') {
        var percentage = (+r / 100);
        return l < 0 ? l * (1 + percentage) : l * (1 - percentage);
    } else {
        return l - r;
    }
};

dc.utils.isNumber = function (n) {
    return n === +n;
};

dc.utils.isFloat = function (n) {
    return n === +n && n !== (n | 0);
};

dc.utils.isInteger = function (n) {
    return n === +n && n === (n | 0);
};

dc.utils.isNegligible = function (n) {
    return !dc.utils.isNumber(n) || (n < dc.constants.NEGLIGIBLE_NUMBER && n > -dc.constants.NEGLIGIBLE_NUMBER);
};

dc.utils.clamp = function (val, min, max) {
    return val < min ? min : (val > max ? max : val);
};

var _idCounter = 0;
dc.utils.uniqueId = function () {
    return ++_idCounter;
};

dc.utils.nameToId = function (name) {
    return name.toLowerCase().replace(/[\s]/g, '_').replace(/[\.']/g, '');
};

dc.utils.appendOrSelect = function (parent, selector, tag) {
    tag = tag || selector;
    var element = parent.select(selector);
    if (element.empty()) {
        element = parent.append(tag);
    }
    return element;
};

dc.utils.safeNumber = function (n) { return dc.utils.isNumber(+n) ? +n : 0;};

dc.logger = {};

dc.logger.enableDebugLog = false;

dc.logger.warn = function (msg) {
    if (console) {
        if (console.warn) {
            console.warn(msg);
        } else if (console.log) {
            console.log(msg);
        }
    }

    return dc.logger;
};

dc.logger.debug = function (msg) {
    if (dc.logger.enableDebugLog && console) {
        if (console.debug) {
            console.debug(msg);
        } else if (console.log) {
            console.log(msg);
        }
    }

    return dc.logger;
};

dc.events = {
    current: null
};

/**
#### dc.events.trigger(function[, delay])
This function triggers a throttled event function with a specified delay (in milli-seconds).  Events
that are triggered repetitively due to user interaction such brush dragging might flood the library
and invoke more renders than can be executed in time. Using this function to wrap your event
function allows the library to smooth out the rendering by throttling events and only responding to
the most recent event.

```js
    chart.renderlet(function(chart){
        // smooth the rendering through event throttling
        dc.events.trigger(function(){
            // focus some other chart to the range selected by user on this chart
            someOtherChart.focus(chart.filter());
        });
    })
```
**/
dc.events.trigger = function (closure, delay) {
    if (!delay) {
        closure();
        return;
    }

    dc.events.current = closure;

    setTimeout(function () {
        if (closure === dc.events.current) {
            closure();
        }
    }, delay);
};

dc.filters = {};

/**
## Filters
The dc.js filters are functions which are passed into crossfilter to chose which records will be
accumulated to produce values for the charts.  In the crossfilter model, any filters applied on one
dimension will affect all the other dimensions but not that one.  dc always applies a filter
function to the dimension; the function combines multiple filters and if any of them accept a
record, it is filtered in.

These filter constructors are used as appropriate by the various charts to implement brushing.  We
mention below which chart uses which filter.  In some cases, many instances of a filter will be added.

**/

/**
#### dc.filters.RangedFilter(low, high)
 RangedFilter is a filter which accepts keys between `low` and `high`.  It is used to implement X
 axis brushing for the [coordinate grid charts](#coordinate-grid-mixin).
**/
dc.filters.RangedFilter = function (low, high) {
    var range = new Array(low, high);
    range.isFiltered = function (value) {
        return value >= this[0] && value < this[1];
    };

    return range;
};

/**
#### dc.filters.TwoDimensionalFilter(array)
 TwoDimensionalFilter is a filter which accepts a single two-dimensional value.  It is used by the
 [heat map chart](#heat-map) to include particular cells as they are clicked.  (Rows and columns are
 filtered by filtering all the cells in the row or column.)
**/
dc.filters.TwoDimensionalFilter = function (array) {
    if (array === null) { return null; }

    var filter = array;
    filter.isFiltered = function (value) {
        return value.length && value.length === filter.length &&
               value[0] === filter[0] && value[1] === filter[1];
    };

    return filter;
};

/**
#### dc.filters.RangedTwoDimensionalFilter(array)
 The RangedTwoDimensionalFilter allows filtering all values which fit within a rectangular
 region. It is used by the [scatter plot](#scatter-plot) to implement rectangular brushing.

 It takes two two-dimensional points in the form `[[x1,y1],[x2,y2]]`, and normalizes them so that
 `x1 <= x2` and `y1 <- y2`. It then returns a filter which accepts any points which are in the
 rectangular range including the lower values but excluding the higher values.

 If an array of two values are given to the RangedTwoDimensionalFilter, it interprets the values as
 two x coordinates `x1` and `x2` and returns a filter which accepts any points for which `x1 <= x <
 x2`.
 **/
dc.filters.RangedTwoDimensionalFilter = function (array) {
    if (array === null) { return null; }

    var filter = array;
    var fromBottomLeft;

    if (filter[0] instanceof Array) {
        fromBottomLeft = [
            [Math.min(array[0][0], array[1][0]), Math.min(array[0][1], array[1][1])],
            [Math.max(array[0][0], array[1][0]), Math.max(array[0][1], array[1][1])]
        ];
    } else {
        fromBottomLeft = [[array[0], -Infinity], [array[1], Infinity]];
    }

    filter.isFiltered = function (value) {
        var x, y;

        if (value instanceof Array) {
            if (value.length !== 2) {
                return false;
            }
            x = value[0];
            y = value[1];
        } else {
            x = value;
            y = fromBottomLeft[0][1];
        }

        return x >= fromBottomLeft[0][0] && x < fromBottomLeft[1][0] &&
               y >= fromBottomLeft[0][1] && y < fromBottomLeft[1][1];
    };

    return filter;
};

/**
## Base Mixin
Base Mixin is an abstract functional object representing a basic dc chart object
for all chart and widget implementations. Methods from the Base Mixin are inherited
and available on all chart implementation in the DC library.
**/
dc.baseMixin = function (_chart) {
    _chart.__dcFlag__ = dc.utils.uniqueId();

    var _dimension;
    var _group;

    var _anchor;
    var _root;
    var _svg;

    var _minWidth = 200;
    var _defaultWidth = function (element) {
        var width = element && element.getBoundingClientRect && element.getBoundingClientRect().width;
        return (width && width > _minWidth) ? width : _minWidth;
    };
    var _width = _defaultWidth;

    var _minHeight = 200;
    var _defaultHeight = function (element) {
        var height = element && element.getBoundingClientRect && element.getBoundingClientRect().height;
        return (height && height > _minHeight) ? height : _minHeight;
    };
    var _height = _defaultHeight;

    var _keyAccessor = dc.pluck('key');
    var _valueAccessor = dc.pluck('value');
    var _label = dc.pluck('key');

    var _ordering = dc.pluck('key');
    var _orderSort;

    var _renderLabel = false;

    var _title = function (d) {
        return _chart.keyAccessor()(d) + ': ' + _chart.valueAccessor()(d);
    };
    var _renderTitle = true;

    var _transitionDuration = 750;

    var _filterPrinter = dc.printers.filters;

    var _renderlets = [];
    var _mandatoryAttributes = ['dimension', 'group'];

    var _chartGroup = dc.constants.DEFAULT_CHART_GROUP;

    var _listeners = d3.dispatch(
        'preRender',
        'postRender',
        'preRedraw',
        'postRedraw',
        'filtered',
        'zoomed');

    var _legend;

    var _filters = [];
    var _filterHandler = function (dimension, filters) {
        dimension.filter(null);

        if (filters.length === 0) {
            dimension.filter(null);
        } else {
            dimension.filterFunction(function (d) {
                for (var i = 0; i < filters.length; i++) {
                    var filter = filters[i];
                    if (filter.isFiltered && filter.isFiltered(d)) {
                        return true;
                    } else if (filter <= d && filter >= d) {
                        return true;
                    }
                }
                return false;
            });
        }
        return filters;
    };

    var _data = function (group) {
        return group.all();
    };

    /**
    #### .width([value])
    Set or get the width attribute of a chart. See `.height` below for further description of the
    behavior.

    **/
    _chart.width = function (w) {
        if (!arguments.length) {
            return _width(_root.node());
        }
        _width = d3.functor(w || _defaultWidth);
        return _chart;
    };

    /**
    #### .height([value])
    Set or get the height attribute of a chart. The height is applied to the SVG element generated by
    the chart when rendered (or rerendered). If a value is given, then it will be used to calculate
    the new height and the chart returned for method chaining.  The value can either be a numeric, a
    function, or falsy. If no value is specified then the value of the current height attribute will
    be returned.

    By default, without an explicit height being given, the chart will select the width of its
    anchor element. If that isn't possible it defaults to 200. Setting the value falsy will return
    the chart to the default behavior

    Examples:

    ```js
    chart.height(250); // Set the chart's height to 250px;
    chart.height(function(anchor) { return doSomethingWith(anchor); }); // set the chart's height with a function
    chart.height(null); // reset the height to the default auto calculation
    ```

    **/
    _chart.height = function (h) {
        if (!arguments.length) {
            return _height(_root.node());
        }
        _height = d3.functor(h || _defaultHeight);
        return _chart;
    };

    /**
    #### .minWidth([value])
    Set or get the minimum width attribute of a chart. This only applicable if the width is
    calculated by dc.

    **/
    _chart.minWidth = function (w) {
        if (!arguments.length) {
            return _minWidth;
        }
        _minWidth = w;
        return _chart;
    };

    /**
    #### .minHeight([value])
    Set or get the minimum height attribute of a chart. This only applicable if the height is
    calculated by dc.

    **/
    _chart.minHeight = function (w) {
        if (!arguments.length) {
            return _minHeight;
        }
        _minHeight = w;
        return _chart;
    };

    /**
    #### .dimension([value]) - **mandatory**
    Set or get the dimension attribute of a chart. In dc a dimension can be any valid [crossfilter
    dimension](https://github.com/square/crossfilter/wiki/API-Reference#wiki-dimension).

    If a value is given, then it will be used as the new dimension. If no value is specified then
    the current dimension will be returned.

    **/
    _chart.dimension = function (d) {
        if (!arguments.length) {
            return _dimension;
        }
        _dimension = d;
        _chart.expireCache();
        return _chart;
    };

    /**
    #### .data([callback])
    Set the data callback or retrieve the chart's data set. The data callback is passed the chart's
    group and by default will return `group.all()`. This behavior may be modified to, for instance,
    return only the top 5 groups:
    ```
        chart.data(function(group) {
            return group.top(5);
        });
    ```
    **/
    _chart.data = function (d) {
        if (!arguments.length) {
            return _data.call(_chart, _group);
        }
        _data = d3.functor(d);
        _chart.expireCache();
        return _chart;
    };

    /**
    #### .group([value, [name]]) - **mandatory**
    Set or get the group attribute of a chart. In dc a group is a [crossfilter
    group](https://github.com/square/crossfilter/wiki/API-Reference#wiki-group). Usually the group
    should be created from the particular dimension associated with the same chart. If a value is
    given, then it will be used as the new group.

    If no value specified then the current group will be returned.
    If `name` is specified then it will be used to generate legend label.

    **/
    _chart.group = function (g, name) {
        if (!arguments.length) {
            return _group;
        }
        _group = g;
        _chart._groupName = name;
        _chart.expireCache();
        return _chart;
    };

    /**
    #### .ordering([orderFunction])
    Get or set an accessor to order ordinal charts
    **/
    _chart.ordering = function (o) {
        if (!arguments.length) {
            return _ordering;
        }
        _ordering = o;
        _orderSort = crossfilter.quicksort.by(_ordering);
        _chart.expireCache();
        return _chart;
    };

    _chart._computeOrderedGroups = function (data) {
        var dataCopy = data.slice(0);

        if (dataCopy.length <= 1) {
            return dataCopy;
        }

        if (!_orderSort) {
            _orderSort = crossfilter.quicksort.by(_ordering);
        }

        return _orderSort(dataCopy, 0, dataCopy.length);
    };

    /**
    #### .filterAll()
    Clear all filters associated with this chart.

    **/
    _chart.filterAll = function () {
        return _chart.filter(null);
    };

    /**
    #### .select(selector)
    Execute d3 single selection in the chart's scope using the given selector and return the d3
    selection. Roughly the same as:
    ```js
    d3.select('#chart-id').select(selector);
    ```
    This function is **not chainable** since it does not return a chart instance; however the d3
    selection result can be chained to d3 function calls.

    **/
    _chart.select = function (s) {
        return _root.select(s);
    };

    /**
    #### .selectAll(selector)
    Execute in scope d3 selectAll using the given selector and return d3 selection result. Roughly
    the same as:
    ```js
    d3.select('#chart-id').selectAll(selector);
    ```
    This function is **not chainable** since it does not return a chart instance; however the d3
    selection result can be chained to d3 function calls.

    **/
    _chart.selectAll = function (s) {
        return _root ? _root.selectAll(s) : null;
    };

    /**
     #### .anchor([anchorChart|anchorSelector|anchorNode], [chartGroup])
     Set the svg root to either be an existing chart's root; or any valid [d3 single
     selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying a dom
     block element such as a div; or a dom element or d3 selection. Optionally registers the chart
     within the chartGroup. This class is called internally on chart initialization, but be called
     again to relocate the chart. However, it will orphan any previously created SVG elements.
    **/
    _chart.anchor = function (a, chartGroup) {
        if (!arguments.length) {
            return _anchor;
        }
        if (dc.instanceOfChart(a)) {
            _anchor = a.anchor();
            _root = a.root();
        } else {
            _anchor = a;
            _root = d3.select(_anchor);
            _root.classed(dc.constants.CHART_CLASS, true);
            dc.registerChart(_chart, chartGroup);
        }
        _chartGroup = chartGroup;
        return _chart;
    };

    /**
    #### .anchorName()
    Returns the dom id for the chart's anchored location.

    **/
    _chart.anchorName = function () {
        var a = _chart.anchor();
        if (a && a.id) {
            return a.id;
        }
        if (a && a.replace) {
            return a.replace('#', '');
        }
        return '' + _chart.chartID();
    };

    /**
    #### .root([rootElement])
    Returns the root element where a chart resides. Usually it will be the parent div element where
    the svg was created. You can also pass in a new root element however this is usually handled by
    dc internally. Resetting the root element on a chart outside of dc internals may have
    unexpected consequences.

    **/
    _chart.root = function (r) {
        if (!arguments.length) {
            return _root;
        }
        _root = r;
        return _chart;
    };

    /**
    #### .svg([svgElement])
    Returns the top svg element for this specific chart. You can also pass in a new svg element,
    however this is usually handled by dc internally. Resetting the svg element on a chart outside
    of dc internals may have unexpected consequences.

    **/
    _chart.svg = function (_) {
        if (!arguments.length) {
            return _svg;
        }
        _svg = _;
        return _chart;
    };

    /**
    #### .resetSvg()
    Remove the chart's SVG elements from the dom and recreate the container SVG element.
    **/
    _chart.resetSvg = function () {
        _chart.select('svg').remove();
        return generateSvg();
    };

    function generateSvg() {
        _svg = _chart.root().append('svg')
            .attr('width', _chart.width())
            .attr('height', _chart.height());
        return _svg;
    }

    /**
    #### .filterPrinter([filterPrinterFunction])
    Set or get the filter printer function. The filter printer function is used to generate human
    friendly text for filter value(s) associated with the chart instance. By default dc charts use a
    default filter printer `dc.printers.filter` that provides simple printing support for both
    single value and ranged filters.

    **/
    _chart.filterPrinter = function (_) {
        if (!arguments.length) {
            return _filterPrinter;
        }
        _filterPrinter = _;
        return _chart;
    };

    /**
    #### .turnOnControls() & .turnOffControls()
    Turn on/off optional control elements within the root element. dc currently supports the
    following html control elements.

    * root.selectAll('.reset') - elements are turned on if the chart has an active filter. This type
     of control element is usually used to store a reset link to allow user to reset filter on a
     certain chart. This element will be turned off automatically if the filter is cleared.
    * root.selectAll('.filter') elements are turned on if the chart has an active filter. The text
     content of this element is then replaced with the current filter value using the filter printer
     function. This type of element will be turned off automatically if the filter is cleared.

    **/
    _chart.turnOnControls = function () {
        if (_root) {
            _chart.selectAll('.reset').style('display', null);
            _chart.selectAll('.filter').text(_filterPrinter(_chart.filters())).style('display', null);
        }
        return _chart;
    };

    _chart.turnOffControls = function () {
        if (_root) {
            _chart.selectAll('.reset').style('display', 'none');
            _chart.selectAll('.filter').style('display', 'none').text(_chart.filter());
        }
        return _chart;
    };

    /**
    #### .transitionDuration([duration])
    Set or get the animation transition duration(in milliseconds) for this chart instance. Default
    duration is 750ms.

    **/
    _chart.transitionDuration = function (d) {
        if (!arguments.length) {
            return _transitionDuration;
        }
        _transitionDuration = d;
        return _chart;
    };

    _chart._mandatoryAttributes = function (_) {
        if (!arguments.length) {
            return _mandatoryAttributes;
        }
        _mandatoryAttributes = _;
        return _chart;
    };

    function checkForMandatoryAttributes(a) {
        if (!_chart[a] || !_chart[a]()) {
            throw new dc.errors.InvalidStateException('Mandatory attribute chart.' + a +
                                                      ' is missing on chart[#' + _chart.anchorName() + ']');
        }
    }

    /**
    #### .render()
    Invoking this method will force the chart to re-render everything from scratch. Generally it
    should only be used to render the chart for the first time on the page or if you want to make
    sure everything is redrawn from scratch instead of relying on the default incremental redrawing
    behaviour.

    **/
    _chart.render = function () {
        _listeners.preRender(_chart);

        if (_mandatoryAttributes) {
            _mandatoryAttributes.forEach(checkForMandatoryAttributes);
        }

        var result = _chart._doRender();

        if (_legend) {
            _legend.render();
        }

        _chart._activateRenderlets('postRender');

        return result;
    };

    _chart._activateRenderlets = function (event) {
        if (_chart.transitionDuration() > 0 && _svg) {
            _svg.transition().duration(_chart.transitionDuration())
                .each('end', function () {
                    runAllRenderlets();
                    if (event) {
                        _listeners[event](_chart);
                    }
                });
        } else {
            runAllRenderlets();
            if (event) {
                _listeners[event](_chart);
            }
        }
    };

    /**
    #### .redraw()
    Calling redraw will cause the chart to re-render data changes incrementally. If there is no
    change in the underlying data dimension then calling this method will have no effect on the
    chart. Most chart interaction in dc will automatically trigger this method through internal
    events (in particular [dc.redrawAll](#dcredrawallchartgroup)); therefore, you only need to
    manually invoke this function if data is manipulated outside of dc's control (for example if
    data is loaded in the background using `crossfilter.add()`).

    **/
    _chart.redraw = function () {
        _listeners.preRedraw(_chart);

        var result = _chart._doRedraw();

        if (_legend) {
            _legend.render();
        }

        _chart._activateRenderlets('postRedraw');

        return result;
    };

    _chart.redrawGroup = function () {
        dc.redrawAll(_chart.chartGroup());
    };

    _chart.renderGroup = function () {
        dc.renderAll(_chart.chartGroup());
    };

    _chart._invokeFilteredListener = function (f) {
        if (f !== undefined) {
            _listeners.filtered(_chart, f);
        }
    };

    _chart._invokeZoomedListener = function () {
        _listeners.zoomed(_chart);
    };

    var _hasFilterHandler = function (filters, filter) {
        if (filter === null || typeof(filter) === 'undefined') {
            return filters.length > 0;
        }
        return filters.some(function (f) {
            return filter <= f && filter >= f;
        });
    };

    /**
    #### .hasFilterHandler([function])
    Set or get the has filter handler. The has filter handler is a function that checks to see if
    the chart's current filters include a specific filter.  Using a custom has filter handler allows
    you to change the way filters are checked for and replaced.

    ```js
    // default has filter handler
    function (filters, filter) {
        if (filter === null || typeof(filter) === 'undefined') {
            return filters.length > 0;
        }
        return filters.some(function (f) {
            return filter <= f && filter >= f;
        });
    }

    // custom filter handler (no-op)
    chart.hasFilterHandler(function(filters, filter) {
        return false;
    });
    ```
    **/
    _chart.hasFilterHandler = function (_) {
        if (!arguments.length) {
            return _hasFilterHandler;
        }
        _hasFilterHandler = _;
        return _chart;
    };

    /**
    #### .hasFilter([filter])
    Check whether any active filter or a specific filter is associated with particular chart instance.
    This function is **not chainable**.

    **/
    _chart.hasFilter = function (filter) {
        return _hasFilterHandler(_filters, filter);
    };

    var _removeFilterHandler = function (filters, filter) {
        for (var i = 0; i < filters.length; i++) {
            if (filters[i] <= filter && filters[i] >= filter) {
                filters.splice(i, 1);
                break;
            }
        }
        return filters;
    };

    /**
    #### .removeFilterHandler([function])
    Set or get the remove filter handler. The remove filter handler is a function that removes a
    filter from the chart's current filters. Using a custom remove filter handler allows you to
    change how filters are removed or perform additional work when removing a filter, e.g. when
    using a filter server other than crossfilter.

    Any changes should modify the `filters` array argument and return that array.

    ```js
    // default remove filter handler
    function (filters, filter) {
        for (var i = 0; i < filters.length; i++) {
            if (filters[i] <= filter && filters[i] >= filter) {
                filters.splice(i, 1);
                break;
            }
        }
        return filters;
    }

    // custom filter handler (no-op)
    chart.removeFilterHandler(function(filters, filter) {
        return filters;
    });
    ```
    **/
    _chart.removeFilterHandler = function (_) {
        if (!arguments.length) {
            return _removeFilterHandler;
        }
        _removeFilterHandler = _;
        return _chart;
    };

    var _addFilterHandler = function (filters, filter) {
        filters.push(filter);
        return filters;
    };

    /**
    #### .addFilterHandler([function])
    Set or get the add filter handler. The add filter handler is a function that adds a filter to
    the chart's filter list. Using a custom add filter handler allows you to change the way filters
    are added or perform additional work when adding a filter, e.g. when using a filter server other
    than crossfilter.

    Any changes should modify the `filters` array argument and return that array.

    ```js
    // default add filter handler
    function (filters, filter) {
        filters.push(filter);
        return filters;
    }

    // custom filter handler (no-op)
    chart.addFilterHandler(function(filters, filter) {
        return filters;
    });
    ```
    **/
    _chart.addFilterHandler = function (_) {
        if (!arguments.length) {
            return _addFilterHandler;
        }
        _addFilterHandler = _;
        return _chart;
    };

    var _resetFilterHandler = function (filters) {
        return [];
    };

    /**
    #### .resetFilterHandler([function])
    Set or get the reset filter handler. The reset filter handler is a function that resets the
    chart's filter list by returning a new list. Using a custom reset filter handler allows you to
    change the way filters are reset, or perform additional work when resetting the filters,
    e.g. when using a filter server other than crossfilter.

    This function should return an array.

    ```js
    // default remove filter handler
    function (filters) {
        return [];
    }

    // custom filter handler (no-op)
    chart.resetFilterHandler(function(filters) {
        return filters;
    });
    ```
    **/
    _chart.resetFilterHandler = function (_) {
        if (!arguments.length) {
            return _resetFilterHandler;
        }
        _resetFilterHandler = _;
        return _chart;
    };

    function applyFilters() {
        if (_chart.dimension() && _chart.dimension().filter) {
            var fs = _filterHandler(_chart.dimension(), _filters);
            _filters = fs ? fs : _filters;
        }
    }

    _chart.replaceFilter = function (_) {
        _filters = [];
        _chart.filter(_);
    };

    /**
    #### .filter([filterValue])
    Filter the chart by the given value or return the current filter if the input parameter is missing.
    ```js
    // filter by a single string
    chart.filter('Sunday');
    // filter by a single age
    chart.filter(18);
    ```
    **/
    _chart.filter = function (_) {
        if (!arguments.length) {
            return _filters.length > 0 ? _filters[0] : null;
        }
        if (_ instanceof Array && _[0] instanceof Array && !_.isFiltered) {
            _[0].forEach(function (d) {
                if (_chart.hasFilter(d)) {
                    _removeFilterHandler(_filters, d);
                } else {
                    _addFilterHandler(_filters, d);
                }
            });
        } else if (_ === null) {
            _filters = _resetFilterHandler(_filters);
        } else {
            if (_chart.hasFilter(_)) {
                _removeFilterHandler(_filters, _);
            } else {
                _addFilterHandler(_filters, _);
            }
        }
        applyFilters();
        _chart._invokeFilteredListener(_);

        if (_root !== null && _chart.hasFilter()) {
            _chart.turnOnControls();
        } else {
            _chart.turnOffControls();
        }

        return _chart;
    };

    /**
    #### .filters()
    Returns all current filters. This method does not perform defensive cloning of the internal
    filter array before returning, therefore any modification of the returned array will effect the
    chart's internal filter storage.

    **/
    _chart.filters = function () {
        return _filters;
    };

    _chart.highlightSelected = function (e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, true);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, false);
    };

    _chart.fadeDeselected = function (e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, false);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, true);
    };

    _chart.resetHighlight = function (e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, false);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, false);
    };

    /**
    #### .onClick(datum)
    This function is passed to d3 as the onClick handler for each chart. The default behavior is to
    filter on the clicked datum (passed to the callback) and redraw the chart group.
    **/
    _chart.onClick = function (d) {
        var filter = _chart.keyAccessor()(d);
        dc.events.trigger(function () {
            _chart.filter(filter);
            _chart.redrawGroup();
        });
    };

    /**
    #### .filterHandler([function])
    Set or get the filter handler. The filter handler is a function that performs the filter action
    on a specific dimension. Using a custom filter handler allows you to perform additional logic
    before or after filtering.

    ```js
    // default filter handler
    function(dimension, filter){
        dimension.filter(filter); // perform filtering
        return filter; // return the actual filter value
    }

    // custom filter handler
    chart.filterHandler(function(dimension, filter){
        var newFilter = filter + 10;
        dimension.filter(newFilter);
        return newFilter; // set the actual filter value to the new value
    });
    ```

    **/
    _chart.filterHandler = function (_) {
        if (!arguments.length) {
            return _filterHandler;
        }
        _filterHandler = _;
        return _chart;
    };

    // abstract function stub
    _chart._doRender = function () {
        // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    _chart._doRedraw = function () {
        // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    _chart.legendables = function () {
        // do nothing in base, should be overridden by sub-function
        return [];
    };

    _chart.legendHighlight = function () {
        // do nothing in base, should be overridden by sub-function
    };

    _chart.legendReset = function () {
        // do nothing in base, should be overridden by sub-function
    };

    _chart.legendToggle = function () {
        // do nothing in base, should be overriden by sub-function
    };

    _chart.isLegendableHidden = function () {
        // do nothing in base, should be overridden by sub-function
        return false;
    };

    /**
    #### .keyAccessor([keyAccessorFunction])
    Set or get the key accessor function. The key accessor function is used to retrieve the key
    value from the crossfilter group. Key values are used differently in different charts, for
    example keys correspond to slices in a pie chart and x axis positions in a grid coordinate chart.
    ```js
    // default key accessor
    chart.keyAccessor(function(d) { return d.key; });
    // custom key accessor for a multi-value crossfilter reduction
    chart.keyAccessor(function(p) { return p.value.absGain; });
    ```

    **/
    _chart.keyAccessor = function (_) {
        if (!arguments.length) {
            return _keyAccessor;
        }
        _keyAccessor = _;
        return _chart;
    };

    /**
    #### .valueAccessor([valueAccessorFunction])
    Set or get the value accessor function. The value accessor function is used to retrieve the
    value from the crossfilter group. Group values are used differently in different charts, for
    example values correspond to slice sizes in a pie chart and y axis positions in a grid
    coordinate chart.
    ```js
    // default value accessor
    chart.valueAccessor(function(d) { return d.value; });
    // custom value accessor for a multi-value crossfilter reduction
    chart.valueAccessor(function(p) { return p.value.percentageGain; });
    ```

    **/
    _chart.valueAccessor = function (_) {
        if (!arguments.length) {
            return _valueAccessor;
        }
        _valueAccessor = _;
        return _chart;
    };

    /**
    #### .label([labelFunction])
    Set or get the label function. The chart class will use this function to render labels for each
    child element in the chart, e.g. slices in a pie chart or bubbles in a bubble chart. Not every
    chart supports the label function for example bar chart and line chart do not use this function
    at all.
    ```js
    // default label function just return the key
    chart.label(function(d) { return d.key; });
    // label function has access to the standard d3 data binding and can get quite complicated
    chart.label(function(d) { return d.data.key + '(' + Math.floor(d.data.value / all.value() * 100) + '%)'; });
    ```

    **/
    _chart.label = function (_) {
        if (!arguments.length) {
            return _label;
        }
        _label = _;
        _renderLabel = true;
        return _chart;
    };

    /**
    #### .renderLabel(boolean)
    Turn on/off label rendering

    **/
    _chart.renderLabel = function (_) {
        if (!arguments.length) {
            return _renderLabel;
        }
        _renderLabel = _;
        return _chart;
    };

    /**
    #### .title([titleFunction])
    Set or get the title function. The chart class will use this function to render the svg title
    (usually interpreted by browser as tooltips) for each child element in the chart, e.g. a slice
    in a pie chart or a bubble in a bubble chart. Almost every chart supports the title function;
    however in grid coordinate charts you need to turn off the brush in order to see titles, because
    otherwise the brush layer will block tooltip triggering.
    ```js
    // default title function just return the key
    chart.title(function(d) { return d.key + ': ' + d.value; });
    // title function has access to the standard d3 data binding and can get quite complicated
    chart.title(function(p) {
        return p.key.getFullYear()
            + '\n'
            + 'Index Gain: ' + numberFormat(p.value.absGain) + '\n'
            + 'Index Gain in Percentage: ' + numberFormat(p.value.percentageGain) + '%\n'
            + 'Fluctuation / Index Ratio: ' + numberFormat(p.value.fluctuationPercentage) + '%';
    });
    ```

    **/
    _chart.title = function (_) {
        if (!arguments.length) {
            return _title;
        }
        _title = _;
        return _chart;
    };

    /**
    #### .renderTitle(boolean)
    Turn on/off title rendering, or return the state of the render title flag if no arguments are
    given.

    **/
    _chart.renderTitle = function (_) {
        if (!arguments.length) {
            return _renderTitle;
        }
        _renderTitle = _;
        return _chart;
    };

    /**
    #### .renderlet(renderletFunction)
    A renderlet is similar to an event listener on rendering event. Multiple renderlets can be added
    to an individual chart.  Each time a chart is rerendered or redrawn the renderlets are invoked
    right after the chart finishes its own drawing routine, giving you a way to modify the svg
    elements. Renderlet functions take the chart instance as the only input parameter and you can
    use the dc API or use raw d3 to achieve pretty much any effect.
    ```js
    // renderlet function
    chart.renderlet(function(chart){
        // mix of dc API and d3 manipulation
        chart.select('g.y').style('display', 'none');
        // its a closure so you can also access other chart variable available in the closure scope
        moveChart.filter(chart.filter());
    });
    ```

    **/
    _chart.renderlet = function (_) {
        _renderlets.push(_);
        return _chart;
    };

    function runAllRenderlets() {
        for (var i = 0; i < _renderlets.length; ++i) {
            _renderlets[i](_chart);
        }
    }

    /**
    #### .chartGroup([group])
    Get or set the chart group to which this chart belongs. Chart groups are rendered or redrawn
    together since it is expected they share the same underlying crossfilter data set.
    **/
    _chart.chartGroup = function (_) {
        if (!arguments.length) {
            return _chartGroup;
        }
        _chartGroup = _;
        return _chart;
    };

    /**
    #### .expireCache()
    Expire the internal chart cache. dc charts cache some data internally on a per chart basis to
    speed up rendering and avoid unnecessary calculation; however it might be useful to clear the
    cache if you have changed state which will affect rendering.  For example if you invoke the
    `crossfilter.add` function or reset group or dimension after rendering it is a good idea to
    clear the cache to make sure charts are rendered properly.

    **/
    _chart.expireCache = function () {
        // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    /**
    #### .legend([dc.legend])
    Attach a dc.legend widget to this chart. The legend widget will automatically draw legend labels
    based on the color setting and names associated with each group.

    ```js
    chart.legend(dc.legend().x(400).y(10).itemHeight(13).gap(5))
    ```

    **/
    _chart.legend = function (l) {
        if (!arguments.length) {
            return _legend;
        }
        _legend = l;
        _legend.parent(_chart);
        return _chart;
    };

    /**
    #### .chartID()
    Returns the internal numeric ID of the chart.
    **/
    _chart.chartID = function () {
        return _chart.__dcFlag__;
    };

    /**
    #### .options(optionsObject)
    Set chart options using a configuration object. Each key in the object will cause the method of
    the same name to be called with the value to set that attribute for the chart.

    Example:
    ```
    chart.options({dimension: myDimension, group: myGroup});
    ```
    **/
    _chart.options = function (opts) {
        for (var o in opts) {
            if (typeof(_chart[o]) === 'function') {
                _chart[o].call(_chart, opts[o]);
            } else {
                dc.logger.debug('Not a valid option setter name: ' + o);
            }
        }
        return _chart;
    };

    /**
    ## Listeners
    All dc chart instance supports the following listeners.

    #### .on('preRender', function(chart){...})
    This listener function will be invoked before chart rendering.

    #### .on('postRender', function(chart){...})
    This listener function will be invoked after chart finish rendering including all renderlets' logic.

    #### .on('preRedraw', function(chart){...})
    This listener function will be invoked before chart redrawing.

    #### .on('postRedraw', function(chart){...})
    This listener function will be invoked after chart finish redrawing including all renderlets' logic.

    #### .on('filtered', function(chart, filter){...})
    This listener function will be invoked after a filter is applied, added or removed.

    #### .on('zoomed', function(chart, filter){...})
    This listener function will be invoked after a zoom is triggered.

    **/
    _chart.on = function (event, listener) {
        _listeners.on(event, listener);
        return _chart;
    };

    return _chart;
};

/**
## Margin Mixin
Margin is a mixin that provides margin utility functions for both the Row Chart and Coordinate Grid
Charts.

**/
dc.marginMixin = function (_chart) {
    var _margin = {top: 10, right: 50, bottom: 30, left: 30};

    /**
    #### .margins([margins])
    Get or set the margins for a particular coordinate grid chart instance. The margins is stored as
    an associative Javascript array. Default margins: {top: 10, right: 50, bottom: 30, left: 30}.

    The margins can be accessed directly from the getter.
    ```js
    var leftMargin = chart.margins().left; // 30 by default
    chart.margins().left = 50;
    leftMargin = chart.margins().left; // now 50
    ```

    **/
    _chart.margins = function (m) {
        if (!arguments.length) {
            return _margin;
        }
        _margin = m;
        return _chart;
    };

    _chart.effectiveWidth = function () {
        return _chart.width() - _chart.margins().left - _chart.margins().right;
    };

    _chart.effectiveHeight = function () {
        return _chart.height() - _chart.margins().top - _chart.margins().bottom;
    };

    return _chart;
};

/**
## Color Mixin
The Color Mixin is an abstract chart functional class providing universal coloring support
as a mix-in for any concrete chart implementation.

**/

dc.colorMixin = function (_chart) {
    var _colors = d3.scale.category20c();
    var _defaultAccessor = true;

    var _colorAccessor = function (d) { return _chart.keyAccessor()(d); };

    /**
    #### .colors([colorScale])
    Retrieve current color scale or set a new color scale. This methods accepts any function that
    operates like a d3 scale. If not set the default is
    `d3.scale.category20c()`.
    ```js
    // alternate categorical scale
    chart.colors(d3.scale.category20b());

    // ordinal scale
    chart.colors(d3.scale.ordinal().range(['red','green','blue']));
    // convenience method, the same as above
    chart.ordinalColors(['red','green','blue']);

    // set a linear scale
    chart.linearColors(["#4575b4", "#ffffbf", "#a50026"]);
    ```
    **/
    _chart.colors = function (_) {
        if (!arguments.length) {
            return _colors;
        }
        if (_ instanceof Array) {
            _colors = d3.scale.quantize().range(_); // deprecated legacy support, note: this fails for ordinal domains
        } else {
            _colors = d3.functor(_);
        }
        return _chart;
    };

    /**
    #### .ordinalColors(r)
    Convenience method to set the color scale to d3.scale.ordinal with range `r`.

    **/
    _chart.ordinalColors = function (r) {
        return _chart.colors(d3.scale.ordinal().range(r));
    };

    /**
    #### .linearColors(r)
    Convenience method to set the color scale to an Hcl interpolated linear scale with range `r`.

    **/
    _chart.linearColors = function (r) {
        return _chart.colors(d3.scale.linear()
                             .range(r)
                             .interpolate(d3.interpolateHcl));
    };

    /**
    #### .colorAccessor([colorAccessorFunction])
    Set or the get color accessor function. This function will be used to map a data point in a
    crossfilter group to a color value on the color scale. The default function uses the key
    accessor.
    ```js
    // default index based color accessor
    .colorAccessor(function (d, i){return i;})
    // color accessor for a multi-value crossfilter reduction
    .colorAccessor(function (d){return d.value.absGain;})
    ```
    **/
    _chart.colorAccessor = function (_) {
        if (!arguments.length) {
            return _colorAccessor;
        }
        _colorAccessor = _;
        _defaultAccessor = false;
        return _chart;
    };

    // what is this?
    _chart.defaultColorAccessor = function () {
        return _defaultAccessor;
    };

    /**
    #### .colorDomain([domain])
    Set or get the current domain for the color mapping function. The domain must be supplied as an
    array.

    Note: previously this method accepted a callback function. Instead you may use a custom scale
    set by `.colors`.

    **/
    _chart.colorDomain = function (_) {
        if (!arguments.length) {
            return _colors.domain();
        }
        _colors.domain(_);
        return _chart;
    };

    /**
    #### .calculateColorDomain()
    Set the domain by determining the min and max values as retrieved by `.colorAccessor` over the
    chart's dataset.

    **/
    _chart.calculateColorDomain = function () {
        var newDomain = [d3.min(_chart.data(), _chart.colorAccessor()),
                         d3.max(_chart.data(), _chart.colorAccessor())];
        _colors.domain(newDomain);
    };

    /**
    #### .getColor(d [, i])
    Get the color for the datum d and counter i. This is used internally by charts to retrieve a color.

    **/
    _chart.getColor = function (d, i) {
        return _colors(_colorAccessor.call(this, d, i));
    };

    /**
     #### .colorCalculator([value])
     Gets or sets chart.getColor.
     **/
    _chart.colorCalculator = function (_) {
        if (!arguments.length) {
            return _chart.getColor;
        }
        _chart.getColor = _;
        return _chart;
    };

    return _chart;
};

/**
## Coordinate Grid Mixin
Includes: [Color Mixin](#color-mixin), [Margin Mixin](#margin-mixin), [Base Mixin](#base-mixin)

Coordinate Grid is an abstract base chart designed to support a number of coordinate grid based
concrete chart types, e.g. bar chart, line chart, and bubble chart.

**/
dc.coordinateGridMixin = function (_chart) {
    var GRID_LINE_CLASS = 'grid-line';
    var HORIZONTAL_CLASS = 'horizontal';
    var VERTICAL_CLASS = 'vertical';
    var Y_AXIS_LABEL_CLASS = 'y-axis-label';
    var X_AXIS_LABEL_CLASS = 'x-axis-label';
    var DEFAULT_AXIS_LABEL_PADDING = 12;

    _chart = dc.colorMixin(dc.marginMixin(dc.baseMixin(_chart)));

    _chart.colors(d3.scale.category10());
    _chart._mandatoryAttributes().push('x');

    function zoomHandler () {
        _refocused = true;
        if (_zoomOutRestrict) {
            _chart.x().domain(constrainRange(_chart.x().domain(), _xOriginalDomain));
            if (_rangeChart) {
                _chart.x().domain(constrainRange(_chart.x().domain(), _rangeChart.x().domain()));
            }
        }

        var domain = _chart.x().domain();
        var domFilter = dc.filters.RangedFilter(domain[0], domain[1]);

        _chart.replaceFilter(domFilter);
        _chart.rescale();
        _chart.redraw();

        if (_rangeChart && !rangesEqual(_chart.filter(), _rangeChart.filter())) {
            dc.events.trigger(function () {
                _rangeChart.replaceFilter(domFilter);
                _rangeChart.redraw();
            });
        }

        _chart._invokeZoomedListener();

        dc.events.trigger(function () {
            _chart.redrawGroup();
        }, dc.constants.EVENT_DELAY);

        _refocused = !rangesEqual(domain, _xOriginalDomain);
    }

    var _parent;
    var _g;
    var _chartBodyG;

    var _x;
    var _xOriginalDomain;
    var _xAxis = d3.svg.axis().orient('bottom');
    var _xUnits = dc.units.integers;
    var _xAxisPadding = 0;
    var _xElasticity = false;
    var _xAxisLabel;
    var _xAxisLabelPadding = 0;
    var _lastXDomain;

    var _y;
    var _yAxis = d3.svg.axis().orient('left');
    var _yAxisPadding = 0;
    var _yElasticity = false;
    var _yAxisLabel;
    var _yAxisLabelPadding = 0;

    var _brush = d3.svg.brush();
    var _brushOn = true;
    var _round;

    var _renderHorizontalGridLine = false;
    var _renderVerticalGridLine = false;

    var _refocused = false;
    var _unitCount;

    var _zoomScale = [1, Infinity];
    var _zoomOutRestrict = true;

    var _zoom = d3.behavior.zoom().on('zoom', zoomHandler);
    var _nullZoom = d3.behavior.zoom().on('zoom', null);
    var _hasBeenMouseZoomable = false;

    var _rangeChart;
    var _focusChart;

    var _mouseZoomable = false;
    var _clipPadding = 0;

    var _outerRangeBandPadding = 0.5;
    var _rangeBandPadding = 0;

    var _useRightYAxis = false;

    _chart.rescale = function () {
        _unitCount = undefined;
    };

    /**
    #### .rangeChart([chart])
    Get or set the range selection chart associated with this instance. Setting the range selection
    chart using this function will automatically update its selection brush when the current chart
    zooms in. In return the given range chart will also automatically attach this chart as its focus
    chart hence zoom in when range brush updates. See the [Nasdaq 100
    Index](http://dc-js.github.com/dc.js/) example for this effect in action.

    **/
    _chart.rangeChart = function (_) {
        if (!arguments.length) {
            return _rangeChart;
        }
        _rangeChart = _;
        _rangeChart.focusChart(_chart);
        return _chart;
    };

    /**
    #### .zoomScale([extent])
    Get or set the scale extent for mouse zooms.

    **/
    _chart.zoomScale = function (_) {
        if (!arguments.length) {
            return _zoomScale;
        }
        _zoomScale = _;
        return _chart;
    };

    /**
    #### .zoomOutRestrict([true/false])
    Get or set the zoom restriction for the chart. If true limits the zoom to origional domain of the chart.
    **/
    _chart.zoomOutRestrict = function (r) {
        if (!arguments.length) {
            return _zoomOutRestrict;
        }
        _zoomScale[0] = r ? 1 : 0;
        _zoomOutRestrict = r;
        return _chart;
    };

    _chart._generateG = function (parent) {
        if (parent === undefined) {
            _parent = _chart.svg();
        } else {
            _parent = parent;
        }

        _g = _parent.append('g');

        _chartBodyG = _g.append('g').attr('class', 'chart-body')
            .attr('transform', 'translate(' + _chart.margins().left + ', ' + _chart.margins().top + ')')
            .attr('clip-path', 'url(#' + getClipPathId() + ')');

        return _g;
    };

    /**
    #### .g([gElement])
    Get or set the root g element. This method is usually used to retrieve the g element in order to
    overlay custom svg drawing programatically. **Caution**: The root g element is usually generated
    by dc.js internals, and resetting it might produce unpredictable result.

    **/
    _chart.g = function (_) {
        if (!arguments.length) {
            return _g;
        }
        _g = _;
        return _chart;
    };

    /**
    #### .mouseZoomable([boolean])
    Set or get mouse zoom capability flag (default: false). When turned on the chart will be
    zoomable using the mouse wheel. If the range selector chart is attached zooming will also update
    the range selection brush on the associated range selector chart.

    **/
    _chart.mouseZoomable = function (z) {
        if (!arguments.length) {
            return _mouseZoomable;
        }
        _mouseZoomable = z;
        return _chart;
    };

    /**
    #### .chartBodyG()
    Retrieve the svg group for the chart body.
    **/
    _chart.chartBodyG = function (_) {
        if (!arguments.length) {
            return _chartBodyG;
        }
        _chartBodyG = _;
        return _chart;
    };

    /**
    #### .x([xScale]) - **mandatory**
    Get or set the x scale. The x scale can be any d3
    [quantitive scale](https://github.com/mbostock/d3/wiki/Quantitative-Scales) or
    [ordinal scale](https://github.com/mbostock/d3/wiki/Ordinal-Scales).
    ```js
    // set x to a linear scale
    chart.x(d3.scale.linear().domain([-2500, 2500]))
    // set x to a time scale to generate histogram
    chart.x(d3.time.scale().domain([new Date(1985, 0, 1), new Date(2012, 11, 31)]))
    ```

    **/
    _chart.x = function (_) {
        if (!arguments.length) {
            return _x;
        }
        _x = _;
        _xOriginalDomain = _x.domain();
        return _chart;
    };

    _chart.xOriginalDomain = function () {
        return _xOriginalDomain;
    };

    /**
    #### .xUnits([xUnits function])
    Set or get the xUnits function. The coordinate grid chart uses the xUnits function to calculate
    the number of data projections on x axis such as the number of bars for a bar chart or the
    number of dots for a line chart. This function is expected to return a Javascript array of all
    data points on x axis, or the number of points on the axis. [d3 time range functions
    d3.time.days, d3.time.months, and
    d3.time.years](https://github.com/mbostock/d3/wiki/Time-Intervals#aliases) are all valid xUnits
    function. dc.js also provides a few units function, see the [Utilities](#utilities) section for
    a list of built-in units functions. The default xUnits function is dc.units.integers.
    ```js
    // set x units to count days
    chart.xUnits(d3.time.days);
    // set x units to count months
    chart.xUnits(d3.time.months);
    ```
    A custom xUnits function can be used as long as it follows the following interface:
    ```js
    // units in integer
    function(start, end, xDomain) {
        // simply calculates how many integers in the domain
        return Math.abs(end - start);
    };

    // fixed units
    function(start, end, xDomain) {
        // be aware using fixed units will disable the focus/zoom ability on the chart
        return 1000;
    };
    ```

    **/
    _chart.xUnits = function (_) {
        if (!arguments.length) {
            return _xUnits;
        }
        _xUnits = _;
        return _chart;
    };

    /**
    #### .xAxis([xAxis])
    Set or get the x axis used by a particular coordinate grid chart instance. This function is most
    useful when x axis customization is required. The x axis in dc.js is an instance of a [d3
    axis object](https://github.com/mbostock/d3/wiki/SVG-Axes#wiki-axis); therefore it supports any
    valid d3 axis manipulation. **Caution**: The x axis is usually generated internally by dc;
    resetting it may cause unexpected results.
    ```js
    // customize x axis tick format
    chart.xAxis().tickFormat(function(v) {return v + '%';});
    // customize x axis tick values
    chart.xAxis().tickValues([0, 100, 200, 300]);
    ```

    **/
    _chart.xAxis = function (_) {
        if (!arguments.length) {
            return _xAxis;
        }
        _xAxis = _;
        return _chart;
    };

    /**
    #### .elasticX([boolean])
    Turn on/off elastic x axis behavior. If x axis elasticity is turned on, then the grid chart will
    attempt to recalculate the x axis range whenever a redraw event is triggered.

    **/
    _chart.elasticX = function (_) {
        if (!arguments.length) {
            return _xElasticity;
        }
        _xElasticity = _;
        return _chart;
    };

    /**
    #### .xAxisPadding([padding])
    Set or get x axis padding for the elastic x axis. The padding will be added to both end of the x
    axis if elasticX is turned on; otherwise it is ignored.

    * padding can be an integer or percentage in string (e.g. '10%'). Padding can be applied to
    number or date x axes.  When padding a date axis, an integer represents number of days being padded
    and a percentage string will be treated the same as an integer.

    **/
    _chart.xAxisPadding = function (_) {
        if (!arguments.length) {
            return _xAxisPadding;
        }
        _xAxisPadding = _;
        return _chart;
    };

    /**
    #### .xUnitCount()
    Returns the number of units displayed on the x axis using the unit measure configured by
    .xUnits.
    **/
    _chart.xUnitCount = function () {
        if (_unitCount === undefined) {
            var units = _chart.xUnits()(_chart.x().domain()[0], _chart.x().domain()[1], _chart.x().domain());

            if (units instanceof Array) {
                _unitCount = units.length;
            } else {
                _unitCount = units;
            }
        }

        return _unitCount;
    };
    /**
     #### .useRightYAxis()
     Gets or sets whether the chart should be drawn with a right axis instead of a left axis. When
     used with a chart in a composite chart, allows both left and right Y axes to be shown on a
     chart.
     **/

    _chart.useRightYAxis = function (_) {
        if (!arguments.length) {
            return _useRightYAxis;
        }
        _useRightYAxis = _;
        return _chart;
    };

    /**
    #### isOrdinal()
    Returns true if the chart is using ordinal xUnits ([dc.units.ordinal](#dcunitsordinal)), or false
    otherwise. Most charts behave differently with ordinal data and use the result of this method to
    trigger the appropriate logic.
    **/
    _chart.isOrdinal = function () {
        return _chart.xUnits() === dc.units.ordinal;
    };

    _chart._useOuterPadding = function () {
        return true;
    };

    _chart._ordinalXDomain = function () {
        var groups = _chart._computeOrderedGroups(_chart.data());
        return groups.map(_chart.keyAccessor());
    };

    function prepareXAxis(g) {
        if (!_chart.isOrdinal()) {
            if (_chart.elasticX()) {
                _x.domain([_chart.xAxisMin(), _chart.xAxisMax()]);
            }
        }
        else { // _chart.isOrdinal()
            if (_chart.elasticX() || _x.domain().length === 0) {
                _x.domain(_chart._ordinalXDomain());
            }
        }

        // has the domain changed?
        var xdom = _x.domain();
        if (!_lastXDomain || xdom.some(function (elem, i) { return elem !== _lastXDomain[i]; })) {
            _chart.rescale();
        }
        _lastXDomain = xdom;

        // please can't we always use rangeBands for bar charts?
        if (_chart.isOrdinal()) {
            _x.rangeBands([0, _chart.xAxisLength()], _rangeBandPadding,
                          _chart._useOuterPadding() ? _outerRangeBandPadding : 0);
        } else {
            _x.range([0, _chart.xAxisLength()]);
        }

        _xAxis = _xAxis.scale(_chart.x());

        renderVerticalGridLines(g);
    }

    _chart.renderXAxis = function (g) {
        var axisXG = g.selectAll('g.x');

        if (axisXG.empty()) {
            axisXG = g.append('g')
                .attr('class', 'axis x')
                .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart._xAxisY() + ')');
        }

        var axisXLab = g.selectAll('text.' + X_AXIS_LABEL_CLASS);
        if (axisXLab.empty() && _chart.xAxisLabel()) {
            axisXLab = g.append('text')
                .attr('transform', 'translate(' + (_chart.margins().left + _chart.xAxisLength() / 2) + ',' +
                    (_chart.height() - _xAxisLabelPadding) + ')')
                .attr('class', X_AXIS_LABEL_CLASS)
                .attr('text-anchor', 'middle')
                .text(_chart.xAxisLabel());
        }
        if (_chart.xAxisLabel() && axisXLab.text() !== _chart.xAxisLabel()) {
            axisXLab.text(_chart.xAxisLabel());
        }

        dc.transition(axisXG, _chart.transitionDuration())
            .call(_xAxis);
    };

    function renderVerticalGridLines(g) {
        var gridLineG = g.selectAll('g.' + VERTICAL_CLASS);

        if (_renderVerticalGridLine) {
            if (gridLineG.empty()) {
                gridLineG = g.insert('g', ':first-child')
                    .attr('class', GRID_LINE_CLASS + ' ' + VERTICAL_CLASS)
                    .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart.margins().top + ')');
            }

            var ticks = _xAxis.tickValues() ? _xAxis.tickValues() :
                    (typeof _x.ticks === 'function' ? _x.ticks(_xAxis.ticks()[0]) : _x.domain());

            var lines = gridLineG.selectAll('line')
                .data(ticks);

            // enter
            var linesGEnter = lines.enter()
                .append('line')
                .attr('x1', function (d) {
                    return _x(d);
                })
                .attr('y1', _chart._xAxisY() - _chart.margins().top)
                .attr('x2', function (d) {
                    return _x(d);
                })
                .attr('y2', 0)
                .attr('opacity', 0);
            dc.transition(linesGEnter, _chart.transitionDuration())
                .attr('opacity', 1);

            // update
            dc.transition(lines, _chart.transitionDuration())
                .attr('x1', function (d) {
                    return _x(d);
                })
                .attr('y1', _chart._xAxisY() - _chart.margins().top)
                .attr('x2', function (d) {
                    return _x(d);
                })
                .attr('y2', 0);

            // exit
            lines.exit().remove();
        }
        else {
            gridLineG.selectAll('line').remove();
        }
    }

    _chart._xAxisY = function () {
        return (_chart.height() - _chart.margins().bottom);
    };

    _chart.xAxisLength = function () {
        return _chart.effectiveWidth();
    };

    /**
    #### .xAxisLabel([labelText, [, padding]])
    Set or get the x axis label. If setting the label, you may optionally include additional padding to
    the margin to make room for the label. By default the padded is set to 12 to accomodate the text height.
    **/
    _chart.xAxisLabel = function (_, padding) {
        if (!arguments.length) {
            return _xAxisLabel;
        }
        _xAxisLabel = _;
        _chart.margins().bottom -= _xAxisLabelPadding;
        _xAxisLabelPadding = (padding === undefined) ? DEFAULT_AXIS_LABEL_PADDING : padding;
        _chart.margins().bottom += _xAxisLabelPadding;
        return _chart;
    };

    _chart._prepareYAxis = function (g) {
        if (_y === undefined || _chart.elasticY()) {
            _y = d3.scale.linear();
            var min = _chart.yAxisMin() || 0,
                max = _chart.yAxisMax() || 0;
            _y.domain([min, max]).rangeRound([_chart.yAxisHeight(), 0]);
        }

        _y.range([_chart.yAxisHeight(), 0]);
        _yAxis = _yAxis.scale(_y);

        if (_useRightYAxis) {
            _yAxis.orient('right');
        }

        _chart._renderHorizontalGridLinesForAxis(g, _y, _yAxis);
    };

    _chart.renderYAxisLabel = function (axisClass, text, rotation, labelXPosition) {
        labelXPosition = labelXPosition || _yAxisLabelPadding;

        var axisYLab = _chart.g().selectAll('text.' + Y_AXIS_LABEL_CLASS + '.' + axisClass + '-label');
        if (axisYLab.empty() && text) {

            var labelYPosition = (_chart.margins().top + _chart.yAxisHeight() / 2);
            axisYLab = _chart.g().append('text')
                .attr('transform', 'translate(' + labelXPosition + ',' + labelYPosition + '),rotate(' + rotation + ')')
                .attr('class', Y_AXIS_LABEL_CLASS + ' ' + axisClass + '-label')
                .attr('text-anchor', 'middle')
                .text(text);
        }
        if (text && axisYLab.text() !== text) {
            axisYLab.text(text);
        }
    };

    _chart.renderYAxisAt = function (axisClass, axis, position) {
        var axisYG = _chart.g().selectAll('g.' + axisClass);
        if (axisYG.empty()) {
            axisYG = _chart.g().append('g')
                .attr('class', 'axis ' + axisClass)
                .attr('transform', 'translate(' + position + ',' + _chart.margins().top + ')');
        }

        dc.transition(axisYG, _chart.transitionDuration()).call(axis);
    };

    _chart.renderYAxis = function () {
        var axisPosition = _useRightYAxis ? (_chart.width() - _chart.margins().right) : _chart._yAxisX();
        _chart.renderYAxisAt('y', _yAxis, axisPosition);
        var labelPosition = _useRightYAxis ? (_chart.width() - _yAxisLabelPadding) : _yAxisLabelPadding;
        var rotation = _useRightYAxis ? 90 : -90;
        _chart.renderYAxisLabel('y', _chart.yAxisLabel(), rotation, labelPosition);
    };

    _chart._renderHorizontalGridLinesForAxis = function (g, scale, axis) {
        var gridLineG = g.selectAll('g.' + HORIZONTAL_CLASS);

        if (_renderHorizontalGridLine) {
            var ticks = axis.tickValues() ? axis.tickValues() : scale.ticks(axis.ticks()[0]);

            if (gridLineG.empty()) {
                gridLineG = g.insert('g', ':first-child')
                    .attr('class', GRID_LINE_CLASS + ' ' + HORIZONTAL_CLASS)
                    .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart.margins().top + ')');
            }

            var lines = gridLineG.selectAll('line')
                .data(ticks);

            // enter
            var linesGEnter = lines.enter()
                .append('line')
                .attr('x1', 1)
                .attr('y1', function (d) {
                    return scale(d);
                })
                .attr('x2', _chart.xAxisLength())
                .attr('y2', function (d) {
                    return scale(d);
                })
                .attr('opacity', 0);
            dc.transition(linesGEnter, _chart.transitionDuration())
                .attr('opacity', 1);

            // update
            dc.transition(lines, _chart.transitionDuration())
                .attr('x1', 1)
                .attr('y1', function (d) {
                    return scale(d);
                })
                .attr('x2', _chart.xAxisLength())
                .attr('y2', function (d) {
                    return scale(d);
                });

            // exit
            lines.exit().remove();
        }
        else {
            gridLineG.selectAll('line').remove();
        }
    };

    _chart._yAxisX = function () {
        return _chart.useRightYAxis() ? _chart.width() - _chart.margins().right : _chart.margins().left;
    };

    /**
    #### .yAxisLabel([labelText, [, padding]])
    Set or get the y axis label. If setting the label, you may optionally include additional padding
    to the margin to make room for the label. By default the padded is set to 12 to accomodate the
    text height.
    **/
    _chart.yAxisLabel = function (_, padding) {
        if (!arguments.length) {
            return _yAxisLabel;
        }
        _yAxisLabel = _;
        _chart.margins().left -= _yAxisLabelPadding;
        _yAxisLabelPadding = (padding === undefined) ? DEFAULT_AXIS_LABEL_PADDING : padding;
        _chart.margins().left += _yAxisLabelPadding;
        return _chart;
    };

    /**
    #### .y([yScale])
    Get or set the y scale. The y scale is typically automatically determined by the chart implementation.

    **/
    _chart.y = function (_) {
        if (!arguments.length) {
            return _y;
        }
        _y = _;
        return _chart;
    };

    /**
    #### .yAxis([yAxis])
    Set or get the y axis used by the coordinate grid chart instance. This function is most useful
    when y axis customization is required. The y axis in dc.js is simply an instance of a [d3 axis
    object](https://github.com/mbostock/d3/wiki/SVG-Axes#wiki-_axis); therefore it supports any
    valid d3 axis manipulation. **Caution**: The y axis is usually generated internally by dc;
    resetting it may cause unexpected results.
    ```js
    // customize y axis tick format
    chart.yAxis().tickFormat(function(v) {return v + '%';});
    // customize y axis tick values
    chart.yAxis().tickValues([0, 100, 200, 300]);
    ```

    **/
    _chart.yAxis = function (y) {
        if (!arguments.length) {
            return _yAxis;
        }
        _yAxis = y;
        return _chart;
    };

    /**
    #### .elasticY([boolean])
    Turn on/off elastic y axis behavior. If y axis elasticity is turned on, then the grid chart will
    attempt to recalculate the y axis range whenever a redraw event is triggered.

    **/
    _chart.elasticY = function (_) {
        if (!arguments.length) {
            return _yElasticity;
        }
        _yElasticity = _;
        return _chart;
    };

    /**
    #### .renderHorizontalGridLines([boolean])
    Turn on/off horizontal grid lines.

    **/
    _chart.renderHorizontalGridLines = function (_) {
        if (!arguments.length) {
            return _renderHorizontalGridLine;
        }
        _renderHorizontalGridLine = _;
        return _chart;
    };

    /**
    #### .renderVerticalGridLines([boolean])
    Turn on/off vertical grid lines.

    **/
    _chart.renderVerticalGridLines = function (_) {
        if (!arguments.length) {
            return _renderVerticalGridLine;
        }
        _renderVerticalGridLine = _;
        return _chart;
    };

    /**
    #### .xAxisMin()
    Calculates the minimum x value to display in the chart. Includes xAxisPadding if set.
    **/
    _chart.xAxisMin = function () {
        var min = d3.min(_chart.data(), function (e) {
            return _chart.keyAccessor()(e);
        });
        return dc.utils.subtract(min, _xAxisPadding);
    };

    /**
    #### .xAxisMax()
    Calculates the maximum x value to display in the chart. Includes xAxisPadding if set.
    **/
    _chart.xAxisMax = function () {
        var max = d3.max(_chart.data(), function (e) {
            return _chart.keyAccessor()(e);
        });
        return dc.utils.add(max, _xAxisPadding);
    };

    /**
    #### .yAxisMin()
    Calculates the minimum y value to display in the chart. Includes yAxisPadding if set.
    **/
    _chart.yAxisMin = function () {
        var min = d3.min(_chart.data(), function (e) {
            return _chart.valueAccessor()(e);
        });
        return dc.utils.subtract(min, _yAxisPadding);
    };

    /**
    #### .yAxisMax()
    Calculates the maximum y value to display in the chart. Includes yAxisPadding if set.
    **/
    _chart.yAxisMax = function () {
        var max = d3.max(_chart.data(), function (e) {
            return _chart.valueAccessor()(e);
        });
        return dc.utils.add(max, _yAxisPadding);
    };

    /**
    #### .yAxisPadding([padding])
    Set or get y axis padding for the elastic y axis. The padding will be added to the top of the y
    axis if elasticY is turned on; otherwise it is ignored.

    * padding can be an integer or percentage in string (e.g. '10%'). Padding can be applied to
    number or date axes. When padding a date axis, an integer represents number of days being padded
    and a percentage string will be treated the same as an integer.

    **/
    _chart.yAxisPadding = function (_) {
        if (!arguments.length) {
            return _yAxisPadding;
        }
        _yAxisPadding = _;
        return _chart;
    };

    _chart.yAxisHeight = function () {
        return _chart.effectiveHeight();
    };

    /**
    #### .round([rounding function])
    Set or get the rounding function used to quantize the selection when brushing is enabled.
    ```js
    // set x unit round to by month, this will make sure range selection brush will
    // select whole months
    chart.round(d3.time.month.round);
    ```

    **/
    _chart.round = function (_) {
        if (!arguments.length) {
            return _round;
        }
        _round = _;
        return _chart;
    };

    _chart._rangeBandPadding = function (_) {
        if (!arguments.length) {
            return _rangeBandPadding;
        }
        _rangeBandPadding = _;
        return _chart;
    };

    _chart._outerRangeBandPadding = function (_) {
        if (!arguments.length) {
            return _outerRangeBandPadding;
        }
        _outerRangeBandPadding = _;
        return _chart;
    };

    dc.override(_chart, 'filter', function (_) {
        if (!arguments.length) {
            return _chart._filter();
        }

        _chart._filter(_);

        if (_) {
            _chart.brush().extent(_);
        } else {
            _chart.brush().clear();
        }

        return _chart;
    });

    _chart.brush = function (_) {
        if (!arguments.length) {
            return _brush;
        }
        _brush = _;
        return _chart;
    };

    function brushHeight() {
        return _chart._xAxisY() - _chart.margins().top;
    }

    _chart.renderBrush = function (g) {
        if (_brushOn) {
            _brush.on('brush', _chart._brushing);
            _brush.on('brushstart', _chart._disableMouseZoom);
            _brush.on('brushend', configureMouseZoom);

            var gBrush = g.append('g')
                .attr('class', 'brush')
                .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart.margins().top + ')')
                .call(_brush.x(_chart.x()));
            _chart.setBrushY(gBrush);
            _chart.setHandlePaths(gBrush);

            if (_chart.hasFilter()) {
                _chart.redrawBrush(g);
            }
        }
    };

    _chart.setHandlePaths = function (gBrush) {
        gBrush.selectAll('.resize').append('path').attr('d', _chart.resizeHandlePath);
    };

    _chart.setBrushY = function (gBrush) {
        gBrush.selectAll('rect').attr('height', brushHeight());
    };

    _chart.extendBrush = function () {
        var extent = _brush.extent();
        if (_chart.round()) {
            extent[0] = extent.map(_chart.round())[0];
            extent[1] = extent.map(_chart.round())[1];

            _g.select('.brush')
                .call(_brush.extent(extent));
        }
        return extent;
    };

    _chart.brushIsEmpty = function (extent) {
        return _brush.empty() || !extent || extent[1] <= extent[0];
    };

    _chart._brushing = function () {
        var extent = _chart.extendBrush();

        _chart.redrawBrush(_g);

        if (_chart.brushIsEmpty(extent)) {
            dc.events.trigger(function () {
                _chart.filter(null);
                _chart.redrawGroup();
            }, dc.constants.EVENT_DELAY);
        } else {
            var rangedFilter = dc.filters.RangedFilter(extent[0], extent[1]);

            dc.events.trigger(function () {
                _chart.replaceFilter(rangedFilter);
                _chart.redrawGroup();
            }, dc.constants.EVENT_DELAY);
        }
    };

    _chart.redrawBrush = function (g) {
        if (_brushOn) {
            if (_chart.filter() && _chart.brush().empty()) {
                _chart.brush().extent(_chart.filter());
            }

            var gBrush = g.select('g.brush');
            gBrush.call(_chart.brush().x(_chart.x()));
            _chart.setBrushY(gBrush);
        }

        _chart.fadeDeselectedArea();
    };

    _chart.fadeDeselectedArea = function () {
        // do nothing, sub-chart should override this function
    };

    // borrowed from Crossfilter example
    _chart.resizeHandlePath = function (d) {
        var e = +(d === 'e'), x = e ? 1 : -1, y = brushHeight() / 3;
        /*jshint -W014 */
        return 'M' + (0.5 * x) + ',' + y
            + 'A6,6 0 0 ' + e + ' ' + (6.5 * x) + ',' + (y + 6)
            + 'V' + (2 * y - 6)
            + 'A6,6 0 0 ' + e + ' ' + (0.5 * x) + ',' + (2 * y)
            + 'Z'
            + 'M' + (2.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8)
            + 'M' + (4.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8);
        /*jshint +W014 */
    };

    function getClipPathId() {
        return _chart.anchorName().replace(/[ .#]/g, '-') + '-clip';
    }

    /**
    #### .clipPadding([padding])
    Get or set the padding in pixels for the clip path. Once set padding will be applied evenly to
    the top, left, right, and bottom when the clip path is generated. If set to zero, the clip area
    will be exactly the chart body area minus the margins.  Default: 5

    **/
    _chart.clipPadding = function (p) {
        if (!arguments.length) {
            return _clipPadding;
        }
        _clipPadding = p;
        return _chart;
    };

    function generateClipPath() {
        var defs = dc.utils.appendOrSelect(_parent, 'defs');
        // cannot select <clippath> elements; bug in WebKit, must select by id
        // https://groups.google.com/forum/#!topic/d3-js/6EpAzQ2gU9I
        var id = getClipPathId();
        var chartBodyClip = dc.utils.appendOrSelect(defs, '#' + id, 'clipPath').attr('id', id);

        var padding = _clipPadding * 2;

        dc.utils.appendOrSelect(chartBodyClip, 'rect')
            .attr('width', _chart.xAxisLength() + padding)
            .attr('height', _chart.yAxisHeight() + padding)
            .attr('transform', 'translate(-' + _clipPadding + ', -' + _clipPadding + ')');
    }

    _chart._preprocessData = function () {};

    _chart._doRender = function () {
        _chart.resetSvg();

        _chart._preprocessData();

        _chart._generateG();
        generateClipPath();

        drawChart(true);

        configureMouseZoom();

        return _chart;
    };

    _chart._doRedraw = function () {
        _chart._preprocessData();

        drawChart(false);
        generateClipPath();

        return _chart;
    };

    function drawChart (render) {
        if (_chart.isOrdinal()) {
            _brushOn = false;
        }

        prepareXAxis(_chart.g());
        _chart._prepareYAxis(_chart.g());

        _chart.plotData();

        if (_chart.elasticX() || _refocused || render) {
            _chart.renderXAxis(_chart.g());
        }

        if (_chart.elasticY() || render) {
            _chart.renderYAxis(_chart.g());
        }

        if (render) {
            _chart.renderBrush(_chart.g());
        } else {
            _chart.redrawBrush(_chart.g());
        }
    }

    function configureMouseZoom () {
        if (_mouseZoomable) {
            _chart._enableMouseZoom();
        }
        else if (_hasBeenMouseZoomable) {
            _chart._disableMouseZoom();
        }
    }

    _chart._enableMouseZoom = function () {
        _hasBeenMouseZoomable = true;
        _zoom.x(_chart.x())
            .scaleExtent(_zoomScale)
            .size([_chart.width(), _chart.height()])
            .duration(_chart.transitionDuration());
        _chart.root().call(_zoom);
    };

    _chart._disableMouseZoom = function () {
        _chart.root().call(_nullZoom);
    };

    function constrainRange(range, constraint) {
        var constrainedRange = [];
        constrainedRange[0] = d3.max([range[0], constraint[0]]);
        constrainedRange[1] = d3.min([range[1], constraint[1]]);
        return constrainedRange;
    }

    /**
    #### .focus([range])
    Zoom this chart to focus on the given range. The given range should be an array containing only
    2 elements (`[start, end]`) defining a range in the x domain. If the range is not given or set
    to null, then the zoom will be reset. _For focus to work elasticX has to be turned off;
    otherwise focus will be ignored._
    ```js
    chart.renderlet(function(chart){
        // smooth the rendering through event throttling
        dc.events.trigger(function(){
            // focus some other chart to the range selected by user on this chart
            someOtherChart.focus(chart.filter());
        });
    })
    ```

    **/
    _chart.focus = function (range) {
        if (hasRangeSelected(range)) {
            _chart.x().domain(range);
        } else {
            _chart.x().domain(_xOriginalDomain);
        }

        _zoom.x(_chart.x());
        zoomHandler();
    };

    _chart.refocused = function () {
        return _refocused;
    };

    _chart.focusChart = function (c) {
        if (!arguments.length) {
            return _focusChart;
        }
        _focusChart = c;
        _chart.on('filtered', function (chart) {
            if (!chart.filter()) {
                dc.events.trigger(function () {
                    _focusChart.x().domain(_focusChart.xOriginalDomain());
                });
            } else if (!rangesEqual(chart.filter(), _focusChart.filter())) {
                dc.events.trigger(function () {
                    _focusChart.focus(chart.filter());
                });
            }
        });
        return _chart;
    };

    function rangesEqual(range1, range2) {
        if (!range1 && !range2) {
            return true;
        }
        else if (!range1 || !range2) {
            return false;
        }
        else if (range1.length === 0 && range2.length === 0) {
            return true;
        }
        else if (range1[0].valueOf() === range2[0].valueOf() &&
            range1[1].valueOf() === range2[1].valueOf()) {
            return true;
        }
        return false;
    }

    /**
    #### .brushOn([boolean])
    Turn on/off the brush-based range filter. When brushing is on then user can drag the mouse
    across a chart with a quantitative scale to perform range filtering based on the extent of the
    brush, or click on the bars of an ordinal bar chart or slices of a pie chart to filter and
    unfilter them. However turning on the brush filter will disable other interactive elements on
    the chart such as highlighting, tool tips, and reference lines. Zooming will still be possible
    if enabled, but only via scrolling (panning will be disabled.) Default: true

    **/
    _chart.brushOn = function (_) {
        if (!arguments.length) {
            return _brushOn;
        }
        _brushOn = _;
        return _chart;
    };

    function hasRangeSelected(range) {
        return range instanceof Array && range.length > 1;
    }

    return _chart;
};

/**
## Stack Mixin
Stack Mixin is an mixin that provides cross-chart support of stackability using d3.layout.stack.

**/
dc.stackMixin = function (_chart) {

    function prepareValues (layer, layerIdx) {
        var valAccessor = layer.accessor || _chart.valueAccessor();
        layer.name = String(layer.name || layerIdx);
        layer.values = layer.group.all().map(function (d, i) {
            return {
                x: _chart.keyAccessor()(d, i),
                y: layer.hidden ? null : valAccessor(d, i),
                data: d,
                layer: layer.name,
                hidden: layer.hidden
            };
        });

        layer.values = layer.values.filter(domainFilter());
        return layer.values;
    }

    var _stackLayout = d3.layout.stack()
        .values(prepareValues);

    var _stack = [];
    var _titles = {};

    var _hidableStacks = false;

    function domainFilter() {
        if (!_chart.x()) {
            return d3.functor(true);
        }
        var xDomain = _chart.x().domain();
        if (_chart.isOrdinal()) {
            // TODO #416
            //var domainSet = d3.set(xDomain);
            return function () {
                return true; //domainSet.has(p.x);
            };
        }
        if (_chart.elasticX()) {
            return function () { return true; };
        }
        return function (p) {
            //return true;
            return p.x >= xDomain[0] && p.x <= xDomain[xDomain.length - 1];
        };
    }

    /**
    #### .stack(group[, name, accessor])
    Stack a new crossfilter group onto this chart with an optional custom value accessor. All stacks
    in the same chart will share the same key accessor and therefore the same set of keys.

    For example, in a stacked bar chart, the bars of each stack will be positioned using the same set
    of keys on the x axis, while stacked vertically. If name is specified then it will be used to
    generate the legend label.
    ```js
    // stack group using default accessor
    chart.stack(valueSumGroup)
    // stack group using custom accessor
    .stack(avgByDayGroup, function(d){return d.value.avgByDay;});
    ```

    **/
    _chart.stack = function (group, name, accessor) {
        if (!arguments.length) {
            return _stack;
        }

        if (arguments.length <= 2) {
            accessor = name;
        }

        var layer = {group:group};
        if (typeof name === 'string') {
            layer.name = name;
        }
        if (typeof accessor === 'function') {
            layer.accessor = accessor;
        }
        _stack.push(layer);

        return _chart;
    };

    dc.override(_chart, 'group', function (g, n, f) {
        if (!arguments.length) {
            return _chart._group();
        }
        _stack = [];
        _titles = {};
        _chart.stack(g, n);
        if (f) {
            _chart.valueAccessor(f);
        }
        return _chart._group(g, n);
    });

    /**
    #### .hidableStacks([boolean])
    Allow named stacks to be hidden or shown by clicking on legend items.
    This does not affect the behavior of hideStack or showStack.

    **/
    _chart.hidableStacks = function (_) {
        if (!arguments.length) {
            return _hidableStacks;
        }
        _hidableStacks = _;
        return _chart;
    };

    function findLayerByName(n) {
        var i = _stack.map(dc.pluck('name')).indexOf(n);
        return _stack[i];
    }

    /**
    #### .hideStack(name)
    Hide all stacks on the chart with the given name.
    The chart must be re-rendered for this change to appear.

    **/
    _chart.hideStack = function (stackName) {
        var layer = findLayerByName(stackName);
        if (layer) {
            layer.hidden = true;
        }
        return _chart;
    };

    /**
    #### .showStack(name)
    Show all stacks on the chart with the given name.
    The chart must be re-rendered for this change to appear.

    **/
    _chart.showStack = function (stackName) {
        var layer = findLayerByName(stackName);
        if (layer) {
            layer.hidden = false;
        }
        return _chart;
    };

    _chart.getValueAccessorByIndex = function (index) {
        return _stack[index].accessor || _chart.valueAccessor();
    };

    _chart.yAxisMin = function () {
        var min = d3.min(flattenStack(), function (p) {
            return (p.y + p.y0 < p.y0) ? (p.y + p.y0) : p.y0;
        });

        return dc.utils.subtract(min, _chart.yAxisPadding());

    };

    _chart.yAxisMax = function () {
        var max = d3.max(flattenStack(), function (p) {
            return p.y + p.y0;
        });

        return dc.utils.add(max, _chart.yAxisPadding());
    };

    function flattenStack() {
        return _chart.data().reduce(function (all, layer) {
            return all.concat(layer.values);
        }, []);
    }

    _chart.xAxisMin = function () {
        var min = d3.min(flattenStack(), dc.pluck('x'));
        return dc.utils.subtract(min, _chart.xAxisPadding());
    };

    _chart.xAxisMax = function () {
        var max = d3.max(flattenStack(), dc.pluck('x'));
        return dc.utils.add(max, _chart.xAxisPadding());
    };

    /**
    #### .title([stackName], [titleFunction])
    Set or get the title function. Chart class will use this function to render svg title (usually interpreted by
    browser as tooltips) for each child element in the chart, i.e. a slice in a pie chart or a bubble in a bubble chart.
    Almost every chart supports title function however in grid coordinate chart you need to turn off brush in order to
    use title otherwise the brush layer will block tooltip trigger.

    If the first argument is a stack name, the title function will get or set the title for that stack. If stackName
    is not provided, the first stack is implied.
    ```js
    // set a title function on 'first stack'
    chart.title('first stack', function(d) { return d.key + ': ' + d.value; });
    // get a title function from 'second stack'
    var secondTitleFunction = chart.title('second stack');
    );
    ```
    **/
    dc.override(_chart, 'title', function (stackName, titleAccessor) {
        if (!stackName) {
            return _chart._title();
        }

        if (typeof stackName === 'function') {
            return _chart._title(stackName);
        }
        if (stackName === _chart._groupName && typeof titleAccessor === 'function') {
            return _chart._title(titleAccessor);
        }

        if (typeof titleAccessor !== 'function') {
            return _titles[stackName] || _chart._title();
        }

        _titles[stackName] = titleAccessor;

        return _chart;
    });

    /**
     #### .stackLayout([layout])
     Gets or sets the stack layout algorithm, which computes a baseline for each stack and
     propagates it to the next.  The default is
     [d3.layout.stack](https://github.com/mbostock/d3/wiki/Stack-Layout#stack).
     **/
    _chart.stackLayout = function (stack) {
        if (!arguments.length) {
            return _stackLayout;
        }
        _stackLayout = stack;
        return _chart;
    };

    function visability(l) {
        return !l.hidden;
    }

    _chart.data(function () {
        var layers = _stack.filter(visability);
        return layers.length ? _chart.stackLayout()(layers) : [];
    });

    _chart._ordinalXDomain = function () {
        return flattenStack().map(dc.pluck('x'));
    };

    _chart.colorAccessor(function (d) {
        var layer = this.layer || this.name || d.name || d.layer;
        return layer;
    });

    _chart.legendables = function () {
        return _stack.map(function (layer, i) {
            return {
                chart:_chart,
                name:layer.name,
                hidden: layer.hidden || false,
                color:_chart.getColor.call(layer, layer.values, i)
            };
        });
    };

    _chart.isLegendableHidden = function (d) {
        var layer = findLayerByName(d.name);
        return layer ? layer.hidden : false;
    };

    _chart.legendToggle = function (d) {
        if (_hidableStacks) {
            if (_chart.isLegendableHidden(d)) {
                _chart.showStack(d.name);
            } else {
                _chart.hideStack(d.name);
            }
            //_chart.redraw();
            _chart.renderGroup();
        }
    };

    return _chart;
};

/**
## Cap Mixin
Cap is a mixin that groups small data elements below a _cap_ into an *others* grouping for both the
Row and Pie Charts.

The top ordered elements in the group up to the cap amount will be kept in the chart, and the rest
will be replaced with an *others* element, with value equal to the sum of the replaced values. The
keys of the elements below the cap limit are recorded in order to filter by those keys when the
*others* element is clicked.

**/
dc.capMixin = function (_chart) {

    var _cap = Infinity;

    var _othersLabel = 'Others';

    var _othersGrouper = function (topRows) {
        var topRowsSum = d3.sum(topRows, _chart.valueAccessor()),
            allRows = _chart.group().all(),
            allRowsSum = d3.sum(allRows, _chart.valueAccessor()),
            topKeys = topRows.map(_chart.keyAccessor()),
            allKeys = allRows.map(_chart.keyAccessor()),
            topSet = d3.set(topKeys),
            others = allKeys.filter(function (d) {return !topSet.has(d);});
        if (allRowsSum > topRowsSum) {
            return topRows.concat([{'others': others, 'key': _othersLabel, 'value': allRowsSum - topRowsSum}]);
        }
        return topRows;
    };

    _chart.cappedKeyAccessor = function (d, i) {
        if (d.others) {
            return d.key;
        }
        return _chart.keyAccessor()(d, i);
    };

    _chart.cappedValueAccessor = function (d, i) {
        if (d.others) {
            return d.value;
        }
        return _chart.valueAccessor()(d, i);
    };

    _chart.data(function (group) {
        if (_cap === Infinity) {
            return _chart._computeOrderedGroups(group.all());
        } else {
            var topRows = group.top(_cap); // ordered by crossfilter group order (default value)
            topRows = _chart._computeOrderedGroups(topRows); // re-order using ordering (default key)
            if (_othersGrouper) {
                return _othersGrouper(topRows);
            }
            return topRows;
        }
    });

    /**
    #### .cap([count])
    Get or set the count of elements to that will be included in the cap.
    **/
    _chart.cap = function (_) {
        if (!arguments.length) {
            return _cap;
        }
        _cap = _;
        return _chart;
    };

    /**
    #### .othersLabel([label])
    Get or set the label for *Others* slice when slices cap is specified. Default label is **Others**.
    **/
    _chart.othersLabel = function (_) {
        if (!arguments.length) {
            return _othersLabel;
        }
        _othersLabel = _;
        return _chart;
    };

    /**
    #### .othersGrouper([grouperFunction])
    Get or set the grouper function that will perform the insertion of data for the *Others* slice
    if the slices cap is specified. If set to a falsy value, no others will be added. By default the
    grouper function computes the sum of all values below the cap.
    ```js
    chart.othersGrouper(function (data) {
        // compute the value for others, presumably the sum of all values below the cap
        var othersSum  = yourComputeOthersValueLogic(data)

        // the keys are needed to properly filter when the others element is clicked
        var othersKeys = yourComputeOthersKeysArrayLogic(data);

        // add the others row to the dataset
        data.push({'key': 'Others', 'value': othersSum, 'others': othersKeys });

        return data;
    });
    ```
    **/
    _chart.othersGrouper = function (_) {
        if (!arguments.length) {
            return _othersGrouper;
        }
        _othersGrouper = _;
        return _chart;
    };

    dc.override(_chart, 'onClick', function (d) {
        if (d.others) {
            _chart.filter([d.others]);
        }
        _chart._onClick(d);
    });

    return _chart;
};

/**
## Bubble Mixin
Includes: [Color Mixin](#color-mixin)

This Mixin provides reusable functionalities for any chart that needs to visualize data using bubbles.

**/
dc.bubbleMixin = function (_chart) {
    var _maxBubbleRelativeSize = 0.3;
    var _minRadiusWithLabel = 10;

    _chart.BUBBLE_NODE_CLASS = 'node';
    _chart.BUBBLE_CLASS = 'bubble';
    _chart.MIN_RADIUS = 10;

    _chart = dc.colorMixin(_chart);

    _chart.renderLabel(true);

    _chart.data(function (group) {
        return group.top(Infinity);
    });

    var _r = d3.scale.linear().domain([0, 100]);

    var _rValueAccessor = function (d) {
        return d.r;
    };

    /**
    #### .r([bubbleRadiusScale])
    Get or set the bubble radius scale. By default the bubble chart uses
    `d3.scale.linear().domain([0, 100])` as its r scale .

    **/
    _chart.r = function (_) {
        if (!arguments.length) {
            return _r;
        }
        _r = _;
        return _chart;
    };

    /**
    #### .radiusValueAccessor([radiusValueAccessor])
    Get or set the radius value accessor function. If set, the radius value accessor function will
    be used to retrieve a data value for each bubble. The data retrieved then will be mapped using
    the r scale to the actual bubble radius. This allows you to encode a data dimension using bubble
    size.

    **/
    _chart.radiusValueAccessor = function (_) {
        if (!arguments.length) {
            return _rValueAccessor;
        }
        _rValueAccessor = _;
        return _chart;
    };

    _chart.rMin = function () {
        var min = d3.min(_chart.data(), function (e) {
            return _chart.radiusValueAccessor()(e);
        });
        return min;
    };

    _chart.rMax = function () {
        var max = d3.max(_chart.data(), function (e) {
            return _chart.radiusValueAccessor()(e);
        });
        return max;
    };

    _chart.bubbleR = function (d) {
        var value = _chart.radiusValueAccessor()(d);
        var r = _chart.r()(value);
        if (isNaN(r) || value <= 0) {
            r = 0;
        }
        return r;
    };

    var labelFunction = function (d) {
        return _chart.label()(d);
    };

    var labelOpacity = function (d) {
        return (_chart.bubbleR(d) > _minRadiusWithLabel) ? 1 : 0;
    };

    _chart._doRenderLabel = function (bubbleGEnter) {
        if (_chart.renderLabel()) {
            var label = bubbleGEnter.select('text');

            if (label.empty()) {
                label = bubbleGEnter.append('text')
                    .attr('text-anchor', 'middle')
                    .attr('dy', '.3em')
                    .on('click', _chart.onClick);
            }

            label
                .attr('opacity', 0)
                .text(labelFunction);
            dc.transition(label, _chart.transitionDuration())
                .attr('opacity', labelOpacity);
        }
    };

    _chart.doUpdateLabels = function (bubbleGEnter) {
        if (_chart.renderLabel()) {
            var labels = bubbleGEnter.selectAll('text')
                .text(labelFunction);
            dc.transition(labels, _chart.transitionDuration())
                .attr('opacity', labelOpacity);
        }
    };

    var titleFunction = function (d) {
        return _chart.title()(d);
    };

    _chart._doRenderTitles = function (g) {
        if (_chart.renderTitle()) {
            var title = g.select('title');

            if (title.empty()) {
                g.append('title').text(titleFunction);
            }
        }
    };

    _chart.doUpdateTitles = function (g) {
        if (_chart.renderTitle()) {
            g.selectAll('title').text(titleFunction);
        }
    };

    /**
    #### .minRadiusWithLabel([radius])
    Get or set the minimum radius for label rendering. If a bubble's radius is less than this value
    then no label will be rendered.  Default: 10

    **/
    _chart.minRadiusWithLabel = function (_) {
        if (!arguments.length) {
            return _minRadiusWithLabel;
        }
        _minRadiusWithLabel = _;
        return _chart;
    };

    /**
    #### .maxBubbleRelativeSize([relativeSize])
    Get or set the maximum relative size of a bubble to the length of x axis. This value is useful
    when the difference in radius between bubbles is too great. Default: 0.3

    **/
    _chart.maxBubbleRelativeSize = function (_) {
        if (!arguments.length) {
            return _maxBubbleRelativeSize;
        }
        _maxBubbleRelativeSize = _;
        return _chart;
    };

    _chart.fadeDeselectedArea = function () {
        if (_chart.hasFilter()) {
            _chart.selectAll('g.' + _chart.BUBBLE_NODE_CLASS).each(function (d) {
                if (_chart.isSelectedNode(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.selectAll('g.' + _chart.BUBBLE_NODE_CLASS).each(function () {
                _chart.resetHighlight(this);
            });
        }
    };

    _chart.isSelectedNode = function (d) {
        return _chart.hasFilter(d.key);
    };

    _chart.onClick = function (d) {
        var filter = d.key;
        dc.events.trigger(function () {
            _chart.filter(filter);
            _chart.redrawGroup();
        });
    };

    return _chart;
};

/**
## Pie Chart
Includes: [Cap Mixin](#cap-mixin), [Color Mixin](#color-mixin), [Base Mixin](#base-mixin)

The pie chart implementation is usually used to visualize a small categorical distribution.  The pie
chart uses keyAccessor to determine the slices, and valueAccessor to calculate the size of each
slice relative to the sum of all values. Slices are ordered by `.ordering` which defaults to sorting
by key.

Examples:

* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
#### dc.pieChart(parent[, chartGroup])
Create a pie chart instance and attaches it to the given parent element.

Parameters:

* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created pie chart instance

```js
// create a pie chart under #chart-container1 element using the default global chart group
var chart1 = dc.pieChart('#chart-container1');
// create a pie chart under #chart-container2 element using chart group A
var chart2 = dc.pieChart('#chart-container2', 'chartGroupA');
```

**/
dc.pieChart = function (parent, chartGroup) {
    var DEFAULT_MIN_ANGLE_FOR_LABEL = 0.5;

    var _sliceCssClass = 'pie-slice';
    var _emptyCssClass = 'empty-chart';
    var _emptyTitle = 'empty';

    var _radius,
        _innerRadius = 0;

    var _g;
    var _cx;
    var _cy;
    var _minAngleForLabel = DEFAULT_MIN_ANGLE_FOR_LABEL;
    var _externalLabelRadius;
    var _chart = dc.capMixin(dc.colorMixin(dc.baseMixin({})));

    _chart.colorAccessor(_chart.cappedKeyAccessor);

    _chart.title(function (d) {
        return _chart.cappedKeyAccessor(d) + ': ' + _chart.cappedValueAccessor(d);
    });

    /**
    #### .slicesCap([cap])
    Get or set the maximum number of slices the pie chart will generate. The top slices are determined by
    value from high to low. Other slices exeeding the cap will be rolled up into one single *Others* slice.
    The resulting data will still be sorted by .ordering (default by key).

    **/
    _chart.slicesCap = _chart.cap;

    _chart.label(_chart.cappedKeyAccessor);
    _chart.renderLabel(true);

    _chart.transitionDuration(350);

    _chart._doRender = function () {
        _chart.resetSvg();

        _g = _chart.svg()
            .append('g')
            .attr('transform', 'translate(' + _chart.cx() + ',' + _chart.cy() + ')');

        drawChart();

        return _chart;
    };

    function drawChart() {
        // set radius on basis of chart dimension if missing
        _radius = _radius ? _radius : d3.min([_chart.width(), _chart.height()]) / 2;

        var arc = buildArcs();

        var pie = pieLayout();
        var pieData;
        // if we have data...
        if (d3.sum(_chart.data(), _chart.valueAccessor())) {
            pieData = pie(_chart.data());
            _g.classed(_emptyCssClass, false);
        } else {
            // otherwise we'd be getting NaNs, so override
            // note: abuse others for its ignoring the value accessor
            pieData = pie([{key:_emptyTitle, value:1, others: [_emptyTitle]}]);
            _g.classed(_emptyCssClass, true);
        }

        if (_g) {
            var slices = _g.selectAll('g.' + _sliceCssClass)
                .data(pieData);

            createElements(slices, arc, pieData);

            updateElements(pieData, arc);

            removeElements(slices);

            highlightFilter();
        }
    }

    function createElements(slices, arc, pieData) {
        var slicesEnter = createSliceNodes(slices);

        createSlicePath(slicesEnter, arc);

        createTitles(slicesEnter);

        createLabels(pieData, arc);
    }

    function createSliceNodes(slices) {
        var slicesEnter = slices
            .enter()
            .append('g')
            .attr('class', function (d, i) {
                return _sliceCssClass + ' _' + i;
            });
        return slicesEnter;
    }

    function createSlicePath(slicesEnter, arc) {
        var slicePath = slicesEnter.append('path')
            .attr('fill', fill)
            .on('click', onClick)
            .attr('d', function (d, i) {
                return safeArc(d, i, arc);
            });

        dc.transition(slicePath, _chart.transitionDuration(), function (s) {
            s.attrTween('d', tweenPie);
        });
    }

    function createTitles(slicesEnter) {
        if (_chart.renderTitle()) {
            slicesEnter.append('title').text(function (d) {
                return _chart.title()(d);
            });
        }
    }

    function positionLabels(labelsEnter, arc) {
        dc.transition(labelsEnter, _chart.transitionDuration())
            .attr('transform', function (d) {
                return labelPosition(d, arc);
            })
            .attr('text-anchor', 'middle')
            .text(function (d) {
                var data = d.data;
                if ((sliceHasNoData(data) || sliceTooSmall(d)) && !isSelectedSlice(d)) {
                    return '';
                }
                return _chart.label()(d.data);
            });
    }

    function createLabels(pieData, arc) {
        if (_chart.renderLabel()) {
            var labels = _g.selectAll('text.' + _sliceCssClass)
                .data(pieData);

            labels.exit().remove();

            var labelsEnter = labels
                .enter()
                .append('text')
                .attr('class', function (d, i) {
                    var classes = _sliceCssClass + ' _' + i;
                    if (_externalLabelRadius) {
                        classes += ' external';
                    }
                    return classes;
                })
                .on('click', onClick);
            positionLabels(labelsEnter, arc);
        }
    }

    function updateElements(pieData, arc) {
        updateSlicePaths(pieData, arc);
        updateLabels(pieData, arc);
        updateTitles(pieData);
    }

    function updateSlicePaths(pieData, arc) {
        var slicePaths = _g.selectAll('g.' + _sliceCssClass)
            .data(pieData)
            .select('path')
            .attr('d', function (d, i) {
                return safeArc(d, i, arc);
            });
        dc.transition(slicePaths, _chart.transitionDuration(),
            function (s) {
                s.attrTween('d', tweenPie);
            }).attr('fill', fill);
    }

    function updateLabels(pieData, arc) {
        if (_chart.renderLabel()) {
            var labels = _g.selectAll('text.' + _sliceCssClass)
                .data(pieData);
            positionLabels(labels, arc);
        }
    }

    function updateTitles(pieData) {
        if (_chart.renderTitle()) {
            _g.selectAll('g.' + _sliceCssClass)
                .data(pieData)
                .select('title')
                .text(function (d) {
                    return _chart.title()(d.data);
                });
        }
    }

    function removeElements(slices) {
        slices.exit().remove();
    }

    function highlightFilter() {
        if (_chart.hasFilter()) {
            _chart.selectAll('g.' + _sliceCssClass).each(function (d) {
                if (isSelectedSlice(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.selectAll('g.' + _sliceCssClass).each(function () {
                _chart.resetHighlight(this);
            });
        }
    }

    /**
    #### .innerRadius([innerRadius])
    Get or set the inner radius of the pie chart. If the inner radius is greater than 0px then the
    pie chart will be rendered as a doughnut chart. Default inner radius is 0px.

    **/
    _chart.innerRadius = function (r) {
        if (!arguments.length) {
            return _innerRadius;
        }
        _innerRadius = r;
        return _chart;
    };

    /**
    #### .radius([radius])
    Get or set the outer radius. If the radius is not set, it will be half of the minimum of the
    chart width and height.

    **/
    _chart.radius = function (r) {
        if (!arguments.length) {
            return _radius;
        }
        _radius = r;
        return _chart;
    };

    /**
    #### .cx([cx])
    Get or set center x coordinate position. Default is center of svg.

    **/
    _chart.cx = function (cx) {
        if (!arguments.length) {
            return (_cx ||  _chart.width() / 2);
        }
        _cx = cx;
        return _chart;
    };

    /**
    #### .cy([cy])
    Get or set center y coordinate position. Default is center of svg.

    **/
    _chart.cy = function (cy) {
        if (!arguments.length) {
            return (_cy ||  _chart.height() / 2);
        }
        _cy = cy;
        return _chart;
    };

    function buildArcs() {
        return d3.svg.arc().outerRadius(_radius).innerRadius(_innerRadius);
    }

    function isSelectedSlice(d) {
        return _chart.hasFilter(_chart.cappedKeyAccessor(d.data));
    }

    _chart._doRedraw = function () {
        drawChart();
        return _chart;
    };

    /**
    #### .minAngleForLabel([minAngle])
    Get or set the minimal slice angle for label rendering. Any slice with a smaller angle will not
    display a slice label.  Default min angle is 0.5.
    **/
    _chart.minAngleForLabel = function (_) {
        if (!arguments.length) {
            return _minAngleForLabel;
        }
        _minAngleForLabel = _;
        return _chart;
    };

    function pieLayout() {
        return d3.layout.pie().sort(null).value(_chart.cappedValueAccessor);
    }

    function sliceTooSmall(d) {
        var angle = (d.endAngle - d.startAngle);
        return isNaN(angle) || angle < _minAngleForLabel;
    }

    function sliceHasNoData(d) {
        return _chart.cappedValueAccessor(d) === 0;
    }

    function tweenPie(b) {
        b.innerRadius = _innerRadius;
        var current = this._current;
        if (isOffCanvas(current)) {
            current = {startAngle: 0, endAngle: 0};
        }
        var i = d3.interpolate(current, b);
        this._current = i(0);
        return function (t) {
            return safeArc(i(t), 0, buildArcs());
        };
    }

    function isOffCanvas(current) {
        return !current || isNaN(current.startAngle) || isNaN(current.endAngle);
    }

    function fill(d, i) {
        return _chart.getColor(d.data, i);
    }

    function onClick(d, i) {
        if (_g.attr('class') !== _emptyCssClass) {
            _chart.onClick(d.data, i);
        }
    }

    function safeArc(d, i, arc) {
        var path = arc(d, i);
        if (path.indexOf('NaN') >= 0) {
            path = 'M0,0';
        }
        return path;
    }

    /**
     #### .emptyTitle([title])
     Title to use for the only slice when there is no data
     */
    _chart.emptyTitle = function (title) {
        if (arguments.length === 0) {
            return _emptyTitle;
        }
        _emptyTitle = title;
        return _chart;
    };

    /**
     #### .externalLabels([radius])
     Position slice labels offset from the outer edge of the chart

     The given argument sets the radial offset.
     */
    _chart.externalLabels = function (radius) {
        if (arguments.length === 0) {
            return _externalLabelRadius;
        } else if (radius) {
            _externalLabelRadius = radius;
        } else {
            _externalLabelRadius = undefined;
        }

        return _chart;
    };

    function labelPosition(d, arc) {
        var centroid;
        if (_externalLabelRadius) {
            centroid = d3.svg.arc()
                .outerRadius(_radius + _externalLabelRadius)
                .innerRadius(_radius + _externalLabelRadius)
                .centroid(d);
        } else {
            centroid = arc.centroid(d);
        }
        if (isNaN(centroid[0]) || isNaN(centroid[1])) {
            return 'translate(0,0)';
        } else {
            return 'translate(' + centroid + ')';
        }
    }

    _chart.legendables = function () {
        return _chart.data().map(function (d, i) {
            var legendable = {name: d.key, data: d.value, others: d.others, chart:_chart};
            legendable.color = _chart.getColor(d, i);
            return legendable;
        });
    };

    _chart.legendHighlight = function (d) {
        highlightSliceFromLegendable(d, true);
    };

    _chart.legendReset = function (d) {
        highlightSliceFromLegendable(d, false);
    };

    _chart.legendToggle = function (d) {
        _chart.onClick({key: d.name, others: d.others});
    };

    function highlightSliceFromLegendable(legendable, highlighted) {
        _chart.selectAll('g.pie-slice').each(function (d) {
            if (legendable.name === d.data.key) {
                d3.select(this).classed('highlight', highlighted);
            }
        });
    }

    return _chart.anchor(parent, chartGroup);
};

/**
## Bar Chart
Includes: [Stack Mixin](#stack Mixin), [Coordinate Grid Mixin](#coordinate-grid-mixin)

Concrete bar chart/histogram implementation.

Examples:

* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
* [Canadian City Crime Stats](http://dc-js.github.com/dc.js/crime/index.html)
#### dc.barChart(parent[, chartGroup])
Create a bar chart instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection | compositeChart - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
 If the bar chart is a sub-chart in a [Composite Chart](#composite-chart) then pass in the parent composite
 chart instance.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created bar chart instance

```js
// create a bar chart under #chart-container1 element using the default global chart group
var chart1 = dc.barChart('#chart-container1');
// create a bar chart under #chart-container2 element using chart group A
var chart2 = dc.barChart('#chart-container2', 'chartGroupA');
// create a sub-chart under a composite parent chart
var chart3 = dc.barChart(compositeChart);
```

**/
dc.barChart = function (parent, chartGroup) {
    var MIN_BAR_WIDTH = 1;
    var DEFAULT_GAP_BETWEEN_BARS = 2;

    var _chart = dc.stackMixin(dc.coordinateGridMixin({}));

    var _gap = DEFAULT_GAP_BETWEEN_BARS;
    var _centerBar = false;
    var _alwaysUseRounding = false;

    var _barWidth;

    dc.override(_chart, 'rescale', function () {
        _chart._rescale();
        _barWidth = undefined;
    });

    dc.override(_chart, 'render', function () {
        if (_chart.round() && _centerBar && !_alwaysUseRounding) {
            dc.logger.warn('By default, brush rounding is disabled if bars are centered. ' +
                         'See dc.js bar chart API documentation for details.');
        }

        _chart._render();
    });

    _chart.plotData = function () {
        var layers = _chart.chartBodyG().selectAll('g.stack')
            .data(_chart.data());

        calculateBarWidth();

        layers
            .enter()
            .append('g')
            .attr('class', function (d, i) {
                return 'stack ' + '_' + i;
            });

        layers.each(function (d, i) {
            var layer = d3.select(this);

            renderBars(layer, i, d);
        });
    };

    function barHeight(d) {
        return dc.utils.safeNumber(Math.abs(_chart.y()(d.y + d.y0) - _chart.y()(d.y0)));
    }

    function renderBars(layer, layerIndex, d) {
        var bars = layer.selectAll('rect.bar')
            .data(d.values, dc.pluck('x'));

        var enter = bars.enter()
            .append('rect')
            .attr('class', 'bar')
            .attr('fill', dc.pluck('data', _chart.getColor))
            .attr('y', _chart.yAxisHeight())
            .attr('height', 0);

        if (_chart.renderTitle()) {
            enter.append('title').text(dc.pluck('data', _chart.title(d.name)));
        }

        if (_chart.isOrdinal()) {
            bars.on('click', onClick);
        }

        dc.transition(bars, _chart.transitionDuration())
            .attr('x', function (d) {
                var x = _chart.x()(d.x);
                if (_centerBar) {
                    x -= _barWidth / 2;
                }
                if (_chart.isOrdinal() && _gap !== undefined) {
                    x += _gap / 2;
                }
                return dc.utils.safeNumber(x);
            })
            .attr('y', function (d) {
                var y = _chart.y()(d.y + d.y0);

                if (d.y < 0) {
                    y -= barHeight(d);
                }

                return dc.utils.safeNumber(y);
            })
            .attr('width', _barWidth)
            .attr('height', function (d) {
                return barHeight(d);
            })
            .attr('fill', dc.pluck('data', _chart.getColor))
            .select('title').text(dc.pluck('data', _chart.title(d.name)));

        dc.transition(bars.exit(), _chart.transitionDuration())
            .attr('height', 0)
            .remove();
    }

    function calculateBarWidth() {
        if (_barWidth === undefined) {
            var numberOfBars = _chart.xUnitCount();

            // please can't we always use rangeBands for bar charts?
            if (_chart.isOrdinal() && _gap === undefined) {
                _barWidth = Math.floor(_chart.x().rangeBand());
            } else if (_gap) {
                _barWidth = Math.floor((_chart.xAxisLength() - (numberOfBars - 1) * _gap) / numberOfBars);
            } else {
                _barWidth = Math.floor(_chart.xAxisLength() / (1 + _chart.barPadding()) / numberOfBars);
            }

            if (_barWidth === Infinity || isNaN(_barWidth) || _barWidth < MIN_BAR_WIDTH) {
                _barWidth = MIN_BAR_WIDTH;
            }
        }
    }

    _chart.fadeDeselectedArea = function () {
        var bars = _chart.chartBodyG().selectAll('rect.bar');
        var extent = _chart.brush().extent();

        if (_chart.isOrdinal()) {
            if (_chart.hasFilter()) {
                bars.classed(dc.constants.SELECTED_CLASS, function (d) {
                    return _chart.hasFilter(d.x);
                });
                bars.classed(dc.constants.DESELECTED_CLASS, function (d) {
                    return !_chart.hasFilter(d.x);
                });
            } else {
                bars.classed(dc.constants.SELECTED_CLASS, false);
                bars.classed(dc.constants.DESELECTED_CLASS, false);
            }
        } else {
            if (!_chart.brushIsEmpty(extent)) {
                var start = extent[0];
                var end = extent[1];

                bars.classed(dc.constants.DESELECTED_CLASS, function (d) {
                    return d.x < start || d.x >= end;
                });
            } else {
                bars.classed(dc.constants.DESELECTED_CLASS, false);
            }
        }
    };

    /**
    #### .centerBar(boolean)
    Whether the bar chart will render each bar centered around the data position on x axis. Default: false

    **/
    _chart.centerBar = function (_) {
        if (!arguments.length) {
            return _centerBar;
        }
        _centerBar = _;
        return _chart;
    };

    function onClick(d) {
        _chart.onClick(d.data);
    }

    /**
    #### .barPadding([padding])
    Get or set the spacing between bars as a fraction of bar size. Valid values are between 0-1.
    Setting this value will also remove any previously set `gap`. See the
    [d3 docs](https://github.com/mbostock/d3/wiki/Ordinal-Scales#wiki-ordinal_rangeBands)
    for a visual description of how the padding is applied.
    **/
    _chart.barPadding = function (_) {
        if (!arguments.length) {
            return _chart._rangeBandPadding();
        }
        _chart._rangeBandPadding(_);
        _gap = undefined;
        return _chart;
    };

    _chart._useOuterPadding = function () {
        return _gap === undefined;
    };

    /**
    #### .outerPadding([padding])
    Get or set the outer padding on an ordinal bar chart. This setting has no effect on non-ordinal charts.
    Will pad the width by `padding * barWidth` on each side of the chart.

    Default: 0.5
    **/
    _chart.outerPadding = _chart._outerRangeBandPadding;

    /**
     #### .gap(gapBetweenBars)
     Manually set fixed gap (in px) between bars instead of relying on the default auto-generated
     gap.  By default the bar chart implementation will calculate and set the gap automatically
     based on the number of data points and the length of the x axis.

    **/
    _chart.gap = function (_) {
        if (!arguments.length) {
            return _gap;
        }
        _gap = _;
        return _chart;
    };

    _chart.extendBrush = function () {
        var extent = _chart.brush().extent();
        if (_chart.round() && (!_centerBar || _alwaysUseRounding)) {
            extent[0] = extent.map(_chart.round())[0];
            extent[1] = extent.map(_chart.round())[1];

            _chart.chartBodyG().select('.brush')
                .call(_chart.brush().extent(extent));
        }

        return extent;
    };

    /**
    #### .alwaysUseRounding([boolean])
    Set or get whether rounding is enabled when bars are centered.  Default: false.  If false, using
    rounding with centered bars will result in a warning and rounding will be ignored.  This flag
    has no effect if bars are not centered.

    When using standard d3.js rounding methods, the brush often doesn't align correctly with
    centered bars since the bars are offset.  The rounding function must add an offset to
    compensate, such as in the following example.
    ```js
    chart.round(function(n) {return Math.floor(n)+0.5});
    ```
    **/
    _chart.alwaysUseRounding = function (_) {
        if (!arguments.length) {
            return _alwaysUseRounding;
        }
        _alwaysUseRounding = _;
        return _chart;
    };

    function colorFilter(color, inv) {
        return function () {
            var item = d3.select(this);
            var match = item.attr('fill') === color;
            return inv ? !match : match;
        };
    }

    _chart.legendHighlight = function (d) {
        if (!_chart.isLegendableHidden(d)) {
            _chart.g().selectAll('rect.bar')
                .classed('highlight', colorFilter(d.color))
                .classed('fadeout', colorFilter(d.color, true));
        }
    };

    _chart.legendReset = function () {
        _chart.g().selectAll('rect.bar')
            .classed('highlight', false)
            .classed('fadeout', false);
    };

    dc.override(_chart, 'xAxisMax', function () {
        var max = this._xAxisMax();
        if ('resolution' in _chart.xUnits()) {
            var res = _chart.xUnits().resolution;
            max += res;
        }
        return max;
    });

    return _chart.anchor(parent, chartGroup);
};

/**
## Line Chart
Includes [Stack Mixin](#stack-mixin), [Coordinate Grid Mixin](#coordinate-grid-mixin)

Concrete line/area chart implementation.

Examples:
* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
* [Canadian City Crime Stats](http://dc-js.github.com/dc.js/crime/index.html)
#### dc.lineChart(parent[, chartGroup])
Create a line chart instance and attach it to the given parent element.

Parameters:

* parent : string | node | selection | compositeChart - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
 If the line chart is a sub-chart in a [Composite Chart](#composite-chart) then pass in the parent composite
 chart instance.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created line chart instance

```js
// create a line chart under #chart-container1 element using the default global chart group
var chart1 = dc.lineChart('#chart-container1');
// create a line chart under #chart-container2 element using chart group A
var chart2 = dc.lineChart('#chart-container2', 'chartGroupA');
// create a sub-chart under a composite parent chart
var chart3 = dc.lineChart(compositeChart);
```

**/
dc.lineChart = function (parent, chartGroup) {
    var DEFAULT_DOT_RADIUS = 5;
    var TOOLTIP_G_CLASS = 'dc-tooltip';
    var DOT_CIRCLE_CLASS = 'dot';
    var Y_AXIS_REF_LINE_CLASS = 'yRef';
    var X_AXIS_REF_LINE_CLASS = 'xRef';
    var DEFAULT_DOT_OPACITY = 1e-6;

    var _chart = dc.stackMixin(dc.coordinateGridMixin({}));
    var _renderArea = false;
    var _dotRadius = DEFAULT_DOT_RADIUS;
    var _dataPointRadius = null;
    var _dataPointFillOpacity = DEFAULT_DOT_OPACITY;
    var _dataPointStrokeOpacity = DEFAULT_DOT_OPACITY;
    var _interpolate = 'linear';
    var _tension = 0.7;
    var _defined;
    var _dashStyle;

    _chart.transitionDuration(500);
    _chart._rangeBandPadding(1);

    _chart.plotData = function () {
        var chartBody = _chart.chartBodyG();
        var layersList = chartBody.selectAll('g.stack-list');

        if (layersList.empty()) {
            layersList = chartBody.append('g').attr('class', 'stack-list');
        }

        var layers = layersList.selectAll('g.stack').data(_chart.data());

        var layersEnter = layers
            .enter()
            .append('g')
            .attr('class', function (d, i) {
                return 'stack ' + '_' + i;
            });

        drawLine(layersEnter, layers);

        drawArea(layersEnter, layers);

        drawDots(chartBody, layers);
    };

    /**
     #### .interpolate([value])
     Gets or sets the interpolator to use for lines drawn, by string name, allowing e.g. step
     functions, splines, and cubic interpolation.  This is passed to
     [d3.svg.line.interpolate](https://github.com/mbostock/d3/wiki/SVG-Shapes#line_interpolate) and
     [d3.svg.area.interpolate](https://github.com/mbostock/d3/wiki/SVG-Shapes#area_interpolate),
     where you can find a complete list of valid arguments
     **/
    _chart.interpolate = function (_) {
        if (!arguments.length) {
            return _interpolate;
        }
        _interpolate = _;
        return _chart;
    };

    /**
     #### .tension([value]) Gets or sets the tension to use for lines drawn, in the range 0 to 1.
     This parameter further customizes the interpolation behavior.  It is passed to
     [d3.svg.line.tension](https://github.com/mbostock/d3/wiki/SVG-Shapes#line_tension) and
     [d3.svg.area.tension](https://github.com/mbostock/d3/wiki/SVG-Shapes#area_tension).  Default:
     0.7
     **/
    _chart.tension = function (_) {
        if (!arguments.length) {
            return _tension;
        }
        _tension = _;
        return _chart;
    };

    /**
     #### .defined([value])
     Gets or sets a function that will determine discontinuities in the line which should be
     skipped: the path will be broken into separate subpaths if some points are undefined.
     This function is passed to
     [d3.svg.line.defined](https://github.com/mbostock/d3/wiki/SVG-Shapes#line_defined)

     Note: crossfilter will sometimes coerce nulls to 0, so you may need to carefully write
     custom reduce functions to get this to work, depending on your data. See
     https://github.com/dc-js/dc.js/issues/615#issuecomment-49089248
     **/
    _chart.defined = function (_) {
        if (!arguments.length) {
            return _defined;
        }
        _defined = _;
        return _chart;
    };

    /**
    #### .dashStyle([array])
    Set the line's d3 dashstyle. This value becomes the 'stroke-dasharray' of line. Defaults to empty
    array (solid line).
     ```js
     // create a Dash Dot Dot Dot
     chart.dashStyle([3,1,1,1]);
     ```
    **/
    _chart.dashStyle = function (_) {
        if (!arguments.length) {
            return _dashStyle;
        }
        _dashStyle = _;
        return _chart;
    };

    /**
    #### .renderArea([boolean])
    Get or set render area flag. If the flag is set to true then the chart will render the area
    beneath each line and the line chart effectively becomes an area chart.

    **/
    _chart.renderArea = function (_) {
        if (!arguments.length) {
            return _renderArea;
        }
        _renderArea = _;
        return _chart;
    };

    function colors(d, i) {
        return _chart.getColor.call(d, d.values, i);
    }

    function drawLine(layersEnter, layers) {
        var line = d3.svg.line()
            .x(function (d) {
                return _chart.x()(d.x);
            })
            .y(function (d) {
                return _chart.y()(d.y + d.y0);
            })
            .interpolate(_interpolate)
            .tension(_tension);
        if (_defined) {
            line.defined(_defined);
        }

        var path = layersEnter.append('path')
            .attr('class', 'line')
            .attr('stroke', colors);
        if (_dashStyle) {
            path.attr('stroke-dasharray', _dashStyle);
        }

        dc.transition(layers.select('path.line'), _chart.transitionDuration())
            //.ease('linear')
            .attr('stroke', colors)
            .attr('d', function (d) {
                return safeD(line(d.values));
            });
    }

    function drawArea(layersEnter, layers) {
        if (_renderArea) {
            var area = d3.svg.area()
                .x(function (d) {
                    return _chart.x()(d.x);
                })
                .y(function (d) {
                    return _chart.y()(d.y + d.y0);
                })
                .y0(function (d) {
                    return _chart.y()(d.y0);
                })
                .interpolate(_interpolate)
                .tension(_tension);
            if (_defined) {
                area.defined(_defined);
            }

            layersEnter.append('path')
                .attr('class', 'area')
                .attr('fill', colors)
                .attr('d', function (d) {
                    return safeD(area(d.values));
                });

            dc.transition(layers.select('path.area'), _chart.transitionDuration())
                //.ease('linear')
                .attr('fill', colors)
                .attr('d', function (d) {
                    return safeD(area(d.values));
                });
        }
    }

    function safeD (d) {
        return (!d || d.indexOf('NaN') >= 0) ? 'M0,0' : d;
    }

    function drawDots(chartBody, layers) {
        if (!_chart.brushOn()) {
            var tooltipListClass = TOOLTIP_G_CLASS + '-list';
            var tooltips = chartBody.select('g.' + tooltipListClass);

            if (tooltips.empty()) {
                tooltips = chartBody.append('g').attr('class', tooltipListClass);
            }

            layers.each(function (d, layerIndex) {
                var points = d.values;
                if (_defined) {
                    points = points.filter(_defined);
                }

                var g = tooltips.select('g.' + TOOLTIP_G_CLASS + '._' + layerIndex);
                if (g.empty()) {
                    g = tooltips.append('g').attr('class', TOOLTIP_G_CLASS + ' _' + layerIndex);
                }

                createRefLines(g);

                var dots = g.selectAll('circle.' + DOT_CIRCLE_CLASS)
                    .data(points, dc.pluck('x'));

                dots.enter()
                    .append('circle')
                    .attr('class', DOT_CIRCLE_CLASS)
                    .attr('r', getDotRadius())
                    .style('fill-opacity', _dataPointFillOpacity)
                    .style('stroke-opacity', _dataPointStrokeOpacity)
                    .on('mousemove', function () {
                        var dot = d3.select(this);
                        showDot(dot);
                        showRefLines(dot, g);
                    })
                    .on('mouseout', function () {
                        var dot = d3.select(this);
                        hideDot(dot);
                        hideRefLines(g);
                    });

                dots
                    .attr('cx', function (d) {
                        return dc.utils.safeNumber(_chart.x()(d.x));
                    })
                    .attr('cy', function (d) {
                        return dc.utils.safeNumber(_chart.y()(d.y + d.y0));
                    })
                    .attr('fill', _chart.getColor)
                    .call(renderTitle, d);

                dots.exit().remove();
            });
        }
    }

    function createRefLines(g) {
        var yRefLine = g.select('path.' + Y_AXIS_REF_LINE_CLASS).empty() ?
            g.append('path').attr('class', Y_AXIS_REF_LINE_CLASS) : g.select('path.' + Y_AXIS_REF_LINE_CLASS);
        yRefLine.style('display', 'none').attr('stroke-dasharray', '5,5');

        var xRefLine = g.select('path.' + X_AXIS_REF_LINE_CLASS).empty() ?
            g.append('path').attr('class', X_AXIS_REF_LINE_CLASS) : g.select('path.' + X_AXIS_REF_LINE_CLASS);
        xRefLine.style('display', 'none').attr('stroke-dasharray', '5,5');
    }

    function showDot(dot) {
        dot.style('fill-opacity', 0.8);
        dot.style('stroke-opacity', 0.8);
        dot.attr('r', _dotRadius);
        return dot;
    }

    function showRefLines(dot, g) {
        var x = dot.attr('cx');
        var y = dot.attr('cy');
        var yAxisX = (_chart._yAxisX() - _chart.margins().left);
        var yAxisRefPathD = 'M' + yAxisX + ' ' + y + 'L' + (x) + ' ' + (y);
        var xAxisRefPathD = 'M' + x + ' ' + _chart.yAxisHeight() + 'L' + x + ' ' + y;
        g.select('path.' + Y_AXIS_REF_LINE_CLASS).style('display', '').attr('d', yAxisRefPathD);
        g.select('path.' + X_AXIS_REF_LINE_CLASS).style('display', '').attr('d', xAxisRefPathD);
    }

    function getDotRadius() {
        return _dataPointRadius || _dotRadius;
    }

    function hideDot(dot) {
        dot.style('fill-opacity', _dataPointFillOpacity)
            .style('stroke-opacity', _dataPointStrokeOpacity)
            .attr('r', getDotRadius());
    }

    function hideRefLines(g) {
        g.select('path.' + Y_AXIS_REF_LINE_CLASS).style('display', 'none');
        g.select('path.' + X_AXIS_REF_LINE_CLASS).style('display', 'none');
    }

    function renderTitle(dot, d) {
        if (_chart.renderTitle()) {
            dot.selectAll('title').remove();
            dot.append('title').text(dc.pluck('data', _chart.title(d.name)));
        }
    }

    /**
    #### .dotRadius([dotRadius])
    Get or set the radius (in px) for dots displayed on the data points. Default dot radius is 5.
    **/
    _chart.dotRadius = function (_) {
        if (!arguments.length) {
            return _dotRadius;
        }
        _dotRadius = _;
        return _chart;
    };

    /**
    #### .renderDataPoints([options])
    Always show individual dots for each datapoint.

    Options, if given, is an object that can contain the following:

    * fillOpacity (default 0.8)
    * strokeOpacity (default 0.8)
    * radius (default 2)

    If `options` is falsy, it disables data point rendering.

    If no `options` are provided, the current `options` values are instead returned.

    Example:
    ```
    chart.renderDataPoints({radius: 2, fillOpacity: 0.8, strokeOpacity: 0.8})
    ```
    **/
    _chart.renderDataPoints = function (options) {
        if (!arguments.length) {
            return {
                fillOpacity: _dataPointFillOpacity,
                strokeOpacity: _dataPointStrokeOpacity,
                radius: _dataPointRadius
            };
        } else if (!options) {
            _dataPointFillOpacity = DEFAULT_DOT_OPACITY;
            _dataPointStrokeOpacity = DEFAULT_DOT_OPACITY;
            _dataPointRadius = null;
        } else {
            _dataPointFillOpacity = options.fillOpacity || 0.8;
            _dataPointStrokeOpacity = options.strokeOpacity || 0.8;
            _dataPointRadius = options.radius || 2;
        }
        return _chart;
    };

    function colorFilter(color, dashstyle, inv) {
        return function () {
            var item = d3.select(this);
            var match = (item.attr('stroke') === color &&
                item.attr('stroke-dasharray') === ((dashstyle instanceof Array) ?
                    dashstyle.join(',') : null)) || item.attr('fill') === color;
            return inv ? !match : match;
        };
    }

    _chart.legendHighlight = function (d) {
        if (!_chart.isLegendableHidden(d)) {
            _chart.g().selectAll('path.line, path.area')
                .classed('highlight', colorFilter(d.color, d.dashstyle))
                .classed('fadeout', colorFilter(d.color, d.dashstyle, true));
        }
    };

    _chart.legendReset = function () {
        _chart.g().selectAll('path.line, path.area')
            .classed('highlight', false)
            .classed('fadeout', false);
    };

    dc.override(_chart, 'legendables', function () {
        var legendables = _chart._legendables();
        if (!_dashStyle) {
            return legendables;
        }
        return legendables.map(function (l) {
            l.dashstyle = _dashStyle;
            return l;
        });
    });

    return _chart.anchor(parent, chartGroup);
};

/**
## Data Count Widget
Includes: [Base Mixin](#base-mixin)

The data count widget is a simple widget designed to display the number of records selected by the
current filters out of the total number of records in the data set. Once created the data count widget
will automatically update the text content of the following elements under the parent element.

* '.total-count' - total number of records
* '.filter-count' - number of records matched by the current filters

Examples:

* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
#### dc.dataCount(parent[, chartGroup])
Create a data count widget and attach it to the given parent element.

Parameters:

* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
* chartGroup : string (optional) - name of the chart group this widget should be placed in.
 The data count widget will only react to filter changes in the chart group.

Returns:
A newly created data count widget instance
#### .dimension(allData) - **mandatory**
For the data count widget the only valid dimension is the entire data set.
#### .group(groupAll) - **mandatory**
For the data count widget the only valid group is the group returned by `dimension.groupAll()`.

```js
var ndx = crossfilter(data);
var all = ndx.groupAll();

dc.dataCount('.dc-data-count')
    .dimension(ndx)
    .group(all);
```

**/
dc.dataCount = function (parent, chartGroup) {
    var _formatNumber = d3.format(',d');
    var _chart = dc.baseMixin({});
    var _html = {some:'', all:''};

    /**
     #### html([object])
     Gets or sets an optional object specifying HTML templates to use depending how many items are
     selected. The text `%total-count` will replaced with the total number of records, and the text
     `%filter-count` will be replaced with the number of selected records.
     - all: HTML template to use if all items are selected
     - some: HTML template to use if not all items are selected

     ```js
     counter.html({
         some: '%filter-count out of %total-count records selected',
         all: 'All records selected. Click on charts to apply filters'
     })
     ```
     **/
    _chart.html = function (s) {
        if (!arguments.length) {
            return _html;
        }
        if (s.all) {
            _html.all = s.all;
        }
        if (s.some) {
            _html.some = s.some;
        }
        return _chart;
    };

    /**
    #### formatNumber([formatter])
    Gets or sets an optional function to format the filter count and total count.

    ```js
    counter.formatNumber(d3.format('.2g'))
    ```
    **/
    _chart.formatNumber = function (s) {
        if (!arguments.length) {
            return _formatNumber;
        }
        _formatNumber = s;
        return _chart;
    };

    _chart._doRender = function () {
        var tot = _chart.dimension().size(),
            val = _chart.group().value();
        var all = _formatNumber(tot);
        var selected = _formatNumber(val);

        if ((tot === val) && (_html.all !== '')) {
            _chart.root().html(_html.all.replace('%total-count', all).replace('%filter-count', selected));
        } else if (_html.some !== '') {
            _chart.root().html(_html.some.replace('%total-count', all).replace('%filter-count', selected));
        } else {
            _chart.selectAll('.total-count').text(all);
            _chart.selectAll('.filter-count').text(selected);
        }
        return _chart;
    };

    _chart._doRedraw = function () {
        return _chart._doRender();
    };

    return _chart.anchor(parent, chartGroup);
};

/**
## Data Table Widget
Includes: [Base Mixin](#base-mixin)

The data table is a simple widget designed to list crossfilter focused data set (rows being
filtered) in a good old tabular fashion.

Examples:
* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
#### dc.dataTable(parent[, chartGroup])
Create a data table widget instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created data table widget instance

**/
dc.dataTable = function (parent, chartGroup) {
    var LABEL_CSS_CLASS = 'dc-table-label';
    var ROW_CSS_CLASS = 'dc-table-row';
    var COLUMN_CSS_CLASS = 'dc-table-column';
    var GROUP_CSS_CLASS = 'dc-table-group';
    var HEAD_CSS_CLASS = 'dc-table-head';

    var _chart = dc.baseMixin({});

    var _size = 25;
    var _columns = [];
    var _sortBy = function (d) {
        return d;
    };
    var _order = d3.ascending;

    _chart._doRender = function () {
        _chart.selectAll('tbody').remove();

        renderRows(renderGroups());

        return _chart;
    };

    _chart._doColumnValueFormat = function (v, d) {
        return ((typeof v === 'function') ?
                v(d) :                          // v as function
                ((typeof v === 'string') ?
                 d[v] :                         // v is field name string
                 v.format(d)                        // v is Object, use fn (element 2)
                )
               );
    };

    _chart._doColumnHeaderFormat = function (d) {
        // if 'function', convert to string representation
        // show a string capitalized
        // if an object then display it's label string as-is.
        return (typeof d === 'function') ?
                _chart._doColumnHeaderFnToString(d) :
                ((typeof d === 'string') ?
                 _chart._doColumnHeaderCapitalize(d) : String(d.label));
    };

    _chart._doColumnHeaderCapitalize = function (s) {
        // capitalize
        return s.charAt(0).toUpperCase() + s.slice(1);
    };

    _chart._doColumnHeaderFnToString = function (f) {
        // columnString(f) {
        var s = String(f);
        var i1 = s.indexOf('return ');
        if (i1 >= 0) {
            var i2 = s.lastIndexOf(';');
            if (i2 >= 0) {
                s = s.substring(i1 + 7, i2);
                var i3 = s.indexOf('numberFormat');
                if (i3 >= 0) {
                    s = s.replace('numberFormat', '');
                }
            }
        }
        return s;
    };

    function renderGroups() {
        // The 'original' example uses all 'functions'.
	// If all 'functions' are used, then don't remove/add a header, and leave
	// the html alone. This preserves the functionality of earlier releases.
	// A 2nd option is a string representing a field in the data.
	// A third option is to supply an Object such as an array of 'information', and
	// supply your own _doColumnHeaderFormat and _doColumnValueFormat functions to
	// create what you need.
        var bAllFunctions = true;
        _columns.forEach(function (f) {
            bAllFunctions = bAllFunctions & (typeof f === 'function');
        });

        if (!bAllFunctions) {
            _chart.selectAll('th').remove();
            var headcols = _chart.root().selectAll('th')
                .data(_columns);

            var headGroup = headcols
                .enter()
                .append('th');

            headGroup
                .attr('class', HEAD_CSS_CLASS)
                    .html(function (d) {
                        return (_chart._doColumnHeaderFormat(d));

                    });
        }

        var groups = _chart.root().selectAll('tbody')
            .data(nestEntries(), function (d) {
                return _chart.keyAccessor()(d);
            });

        var rowGroup = groups
            .enter()
            .append('tbody');

        rowGroup
            .append('tr')
            .attr('class', GROUP_CSS_CLASS)
                .append('td')
                .attr('class', LABEL_CSS_CLASS)
                .attr('colspan', _columns.length)
                .html(function (d) {
                    return _chart.keyAccessor()(d);
                });

        groups.exit().remove();

        return rowGroup;
    }

    function nestEntries() {
        var entries;
        if (_order === d3.ascending) {
            entries = _chart.dimension().bottom(_size);
        } else {
            entries = _chart.dimension().top(_size);
        }

        return d3.nest()
            .key(_chart.group())
            .sortKeys(_order)
            .entries(entries.sort(function (a, b) {
                return _order(_sortBy(a), _sortBy(b));
            }));
    }

    function renderRows(groups) {
        var rows = groups.order()
            .selectAll('tr.' + ROW_CSS_CLASS)
            .data(function (d) {
                return d.values;
            });

        var rowEnter = rows.enter()
            .append('tr')
            .attr('class', ROW_CSS_CLASS);

        _columns.forEach(function (v, i) {
            rowEnter.append('td')
                .attr('class', COLUMN_CSS_CLASS + ' _' + i)
                .html(function (d) {
                    return _chart._doColumnValueFormat(v, d);
                });
        });

        rows.exit().remove();

        return rows;
    }

    _chart._doRedraw = function () {
        return _chart._doRender();
    };

    /**
    #### .size([size])
    Get or set the table size which determines the number of rows displayed by the widget.

    **/
    _chart.size = function (s) {
        if (!arguments.length) {
            return _size;
        }
        _size = s;
        return _chart;
    };

    /**
    #### .columns([columnFunctionArray])
    Get or set column functions. The data table widget now supports several methods of specifying
    the columns to display.  The original method, first shown below, uses an array of functions to
    generate dynamic columns. Column functions are simple javascript functions with only one input
    argument `d` which represents a row in the data set. The return value of these functions will be
    used directly to generate table content for each cell. However, this method requires the .html
    table entry to have a fixed set of column headers.

    ```js
        chart.columns([
            function(d) {
                return d.date;
            },
            function(d) {
                return d.open;
            },
            function(d) {
                return d.close;
            },
            function(d) {
                return numberFormat(d.close - d.open);
            },
            function(d) {
                return d.volume;
            }
        ]);
    ```

    The next example shows you can simply list the data (d) content directly without
    specifying it as a function, except where necessary (ie, computed columns).  Note
    the data element accessor name is capitalized when displayed in the table. You can
    also mix in functions as desired or necessary, but you must use the
        Object = [Label, Fn] method as shown below.
    You may wish to override the following two functions, which are internally used to
    translate the column information or function into a displayed header. The first one
    is used on the simple "string" column specifier, the second is used to transform the
    String(fn) into something displayable. For the Stock example, the function for Change
    becomes a header of 'd.close - d.open'.
        _chart._doColumnHeaderCapitalize _chart._doColumnHeaderFnToString
    You may use your own Object definition, however you must then override
        _chart._doColumnHeaderFormat , _chart._doColumnValueFormat
    Be aware that fields without numberFormat specification will be displayed just as
    they are stored in the data, unformatted.
    ```js
        chart.columns([
                "date",    // d["date"], ie, a field accessor; capitalized automatically
                "open",    // ...
                "close",   // ...
                ["Change", // Specify an Object = [Label, Fn]
                      function (d) {
                          return numberFormat(d.close - d.open);
                      }],
                "volume"   // d["volume"], ie, a field accessor; capitalized automatically
        ]);
    ```

    A third example, where all fields are specified using the Object = [Label, Fn] method.

    ```js
        chart.columns([
            ["Date",   // Specify an Object = [Label, Fn]
             function (d) {
                 return d.date;
             }],
            ["Open",
             function (d) {
                 return numberFormat(d.open);
             }],
            ["Close",
             function (d) {
                 return numberFormat(d.close);
             }],
            ["Change",
             function (d) {
                 return numberFormat(d.close - d.open);
             }],
            ["Volume",
             function (d) {
                 return d.volume;
             }]
        ]);
    ```

    **/
    _chart.columns = function (_) {
        if (!arguments.length) {
            return _columns;
        }
        _columns = _;
        return _chart;
    };

    /**
    #### .sortBy([sortByFunction])
    Get or set sort-by function. This function works as a value accessor at row level and returns a
    particular field to be sorted by. Default value: identity function

    ```js
       chart.sortBy(function(d) {
            return d.date;
        });
    ```

    **/
    _chart.sortBy = function (_) {
        if (!arguments.length) {
            return _sortBy;
        }
        _sortBy = _;
        return _chart;
    };

    /**
    #### .order([order])
    Get or set sort order. Default value: ``` d3.ascending ```

    ```js
        chart.order(d3.descending);
    ```

    **/
    _chart.order = function (_) {
        if (!arguments.length) {
            return _order;
        }
        _order = _;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

/**
 ## Data Grid Widget

 Includes: [Base Mixin](#base-mixin)

 Data grid is a simple widget designed to list the filtered records, providing
 a simple way to define how the items are displayed.

 Examples:
 * [List of members of the european parliament](http://europarl.me/dc.js/web/ep/index.html)

 #### dc.dataGrid(parent[, chartGroup])
 Create a data grid widget instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created data grid widget instance

 **/
dc.dataGrid = function (parent, chartGroup) {
    var LABEL_CSS_CLASS = 'dc-grid-label';
    var ITEM_CSS_CLASS = 'dc-grid-item';
    var GROUP_CSS_CLASS = 'dc-grid-group';
    var GRID_CSS_CLASS = 'dc-grid-top';

    var _chart = dc.baseMixin({});

    var _size = 999; // shouldn't be needed, but you might
    var _html = function (d) { return 'you need to provide an html() handling param:  ' + JSON.stringify(d); };
    var _sortBy = function (d) {
        return d;
    };
    var _order = d3.ascending;

    var _htmlGroup = function (d) {
        return '<div class=\'' + GROUP_CSS_CLASS + '\'><h1 class=\'' + LABEL_CSS_CLASS + '\'>' +
            _chart.keyAccessor()(d) + '</h1></div>';
    };

    _chart._doRender = function () {
        _chart.selectAll('div.' + GRID_CSS_CLASS).remove();

        renderItems(renderGroups());

        return _chart;
    };

    function renderGroups() {
        var groups = _chart.root().selectAll('div.' + GRID_CSS_CLASS)
                .data(nestEntries(), function (d) {
                    return _chart.keyAccessor()(d);
                });

        var itemGroup = groups
                .enter()
                .append('div')
                .attr('class', GRID_CSS_CLASS);

        if (_htmlGroup) {
            itemGroup
                .html(function (d) {
                    return _htmlGroup(d);
                });
        }

        groups.exit().remove();
        return itemGroup;
    }

    function nestEntries() {
        var entries = _chart.dimension().top(_size);

        return d3.nest()
            .key(_chart.group())
            .sortKeys(_order)
            .entries(entries.sort(function (a, b) {
                return _order(_sortBy(a), _sortBy(b));
            }));
    }

    function renderItems(groups) {
        var items = groups.order()
                .selectAll('div.' + ITEM_CSS_CLASS)
                .data(function (d) {
                    return d.values;
                });

        items.enter()
            .append('div')
            .attr('class', ITEM_CSS_CLASS)
            .html(function (d) {
                return _html(d);
            });

        items.exit().remove();

        return items;
    }

    _chart._doRedraw = function () {
        return _chart._doRender();
    };

    /**
     #### .size([size])
     Get or set the grid size which determines the number of items displayed by the widget.

     **/
    _chart.size = function (s) {
        if (!arguments.length) {
            return _size;
        }
        _size = s;
        return _chart;
    };

    /**
     #### .html( function (data) { return '<html>'; })
     Get or set the function that formats an item. The data grid widget uses a
     function to generate dynamic html. Use your favourite templating engine or
     generate the string directly.
     ```js
     chart.html(function (d) { return '<div class='item '+data.exampleCategory+''>'+data.exampleString+'</div>';});
     ```

     **/
    _chart.html = function (_) {
        if (!arguments.length) {
            return _html;
        }
        _html = _;
        return _chart;
    };

    /**
     #### .htmlGroup( function (data) { return '<html>'; })
     Get or set the function that formats a group label.
     ```js
     chart.htmlGroup (function (d) { return '<h2>'.d.key . 'with ' . d.values.length .' items</h2>'});
     ```

     **/
    _chart.htmlGroup = function (_) {
        if (!arguments.length) {
            return _htmlGroup;
        }
        _htmlGroup = _;
        return _chart;
    };

    /**
     #### .sortBy([sortByFunction])
     Get or set sort-by function. This function works as a value accessor at the item
     level and returns a particular field to be sorted.
     by. Default: identity function

     ```js
     chart.sortBy(function(d) {
         return d.date;
     });
     ```

     **/
    _chart.sortBy = function (_) {
        if (!arguments.length) {
            return _sortBy;
        }
        _sortBy = _;
        return _chart;
    };

    /**
     #### .order([order])
     Get or set sort order function. Default value: ``` d3.ascending ```

     ```js
     chart.order(d3.descending);
     ```

     **/
    _chart.order = function (_) {
        if (!arguments.length) {
            return _order;
        }
        _order = _;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

/**
## Bubble Chart
Includes: [Bubble Mixin](#bubble-mixin), [Coordinate Grid Mixin](#coordinate-grid-mixin)

A concrete implementation of a general purpose bubble chart that allows data visualization using the
following dimensions:

* x axis position
* y axis position
* bubble radius
* color

Examples:
* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
* [US Venture Capital Landscape 2011](http://dc-js.github.com/dc.js/vc/index.html)
#### dc.bubbleChart(parent[, chartGroup])
Create a bubble chart instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection | compositeChart - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created bubble chart instance

```js
// create a bubble chart under #chart-container1 element using the default global chart group
var bubbleChart1 = dc.bubbleChart('#chart-container1');
// create a bubble chart under #chart-container2 element using chart group A
var bubbleChart2 = dc.bubbleChart('#chart-container2', 'chartGroupA');
```

**/
dc.bubbleChart = function (parent, chartGroup) {
    var _chart = dc.bubbleMixin(dc.coordinateGridMixin({}));

    var _elasticRadius = false;

    _chart.transitionDuration(750);

    var bubbleLocator = function (d) {
        return 'translate(' + (bubbleX(d)) + ',' + (bubbleY(d)) + ')';
    };

    /**
    #### .elasticRadius([boolean])
    Turn on or off the elastic bubble radius feature, or return the value of the flag. If this
    feature is turned on, then bubble radii will be automatically rescaled to fit the chart better.

    **/
    _chart.elasticRadius = function (_) {
        if (!arguments.length) {
            return _elasticRadius;
        }
        _elasticRadius = _;
        return _chart;
    };

    _chart.plotData = function () {
        if (_elasticRadius) {
            _chart.r().domain([_chart.rMin(), _chart.rMax()]);
        }

        _chart.r().range([_chart.MIN_RADIUS, _chart.xAxisLength() * _chart.maxBubbleRelativeSize()]);

        var bubbleG = _chart.chartBodyG().selectAll('g.' + _chart.BUBBLE_NODE_CLASS)
            .data(_chart.data(), function (d) { return d.key; });

        renderNodes(bubbleG);

        updateNodes(bubbleG);

        removeNodes(bubbleG);

        _chart.fadeDeselectedArea();
    };

    function renderNodes(bubbleG) {
        var bubbleGEnter = bubbleG.enter().append('g');

        bubbleGEnter
            .attr('class', _chart.BUBBLE_NODE_CLASS)
            .attr('transform', bubbleLocator)
            .append('circle').attr('class', function (d, i) {
                return _chart.BUBBLE_CLASS + ' _' + i;
            })
            .on('click', _chart.onClick)
            .attr('fill', _chart.getColor)
            .attr('r', 0);
        dc.transition(bubbleG, _chart.transitionDuration())
            .selectAll('circle.' + _chart.BUBBLE_CLASS)
            .attr('r', function (d) {
                return _chart.bubbleR(d);
            })
            .attr('opacity', function (d) {
                return (_chart.bubbleR(d) > 0) ? 1 : 0;
            });

        _chart._doRenderLabel(bubbleGEnter);

        _chart._doRenderTitles(bubbleGEnter);
    }

    function updateNodes(bubbleG) {
        dc.transition(bubbleG, _chart.transitionDuration())
            .attr('transform', bubbleLocator)
            .selectAll('circle.' + _chart.BUBBLE_CLASS)
            .attr('fill', _chart.getColor)
            .attr('r', function (d) {
                return _chart.bubbleR(d);
            })
            .attr('opacity', function (d) {
                return (_chart.bubbleR(d) > 0) ? 1 : 0;
            });

        _chart.doUpdateLabels(bubbleG);
        _chart.doUpdateTitles(bubbleG);
    }

    function removeNodes(bubbleG) {
        bubbleG.exit().remove();
    }

    function bubbleX(d) {
        var x = _chart.x()(_chart.keyAccessor()(d));
        if (isNaN(x)) {
            x = 0;
        }
        return x;
    }

    function bubbleY(d) {
        var y = _chart.y()(_chart.valueAccessor()(d));
        if (isNaN(y)) {
            y = 0;
        }
        return y;
    }

    _chart.renderBrush = function () {
        // override default x axis brush from parent chart
    };

    _chart.redrawBrush = function () {
        // override default x axis brush from parent chart
        _chart.fadeDeselectedArea();
    };

    return _chart.anchor(parent, chartGroup);
};

/**
## Composite Chart
Includes: [Coordinate Grid Mixin](#coordinate-grid-mixin)

Composite charts are a special kind of chart that render multiple charts on the same Coordinate
Grid. You can overlay (compose) different bar/line/area charts in a single composite chart to
achieve some quite flexible charting effects.
#### dc.compositeChart(parent[, chartGroup])
Create a composite chart instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created composite chart instance

```js
// create a composite chart under #chart-container1 element using the default global chart group
var compositeChart1 = dc.compositeChart('#chart-container1');
// create a composite chart under #chart-container2 element using chart group A
var compositeChart2 = dc.compositeChart('#chart-container2', 'chartGroupA');
```

**/
dc.compositeChart = function (parent, chartGroup) {

    var SUB_CHART_CLASS = 'sub';
    var DEFAULT_RIGHT_Y_AXIS_LABEL_PADDING = 12;

    var _chart = dc.coordinateGridMixin({});
    var _children = [];

    var _childOptions = {};

    var _shareColors = false,
        _shareTitle = true;

    var _rightYAxis = d3.svg.axis(),
        _rightYAxisLabel = 0,
        _rightYAxisLabelPadding = DEFAULT_RIGHT_Y_AXIS_LABEL_PADDING,
        _rightY,
        _rightAxisGridLines = false;

    _chart._mandatoryAttributes([]);
    _chart.transitionDuration(500);

    dc.override(_chart, '_generateG', function () {
        var g = this.__generateG();

        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];

            generateChildG(child, i);

            if (!child.dimension()) {
                child.dimension(_chart.dimension());
            }
            if (!child.group()) {
                child.group(_chart.group());
            }

            child.chartGroup(_chart.chartGroup());
            child.svg(_chart.svg());
            child.xUnits(_chart.xUnits());
            child.transitionDuration(_chart.transitionDuration());
            child.brushOn(_chart.brushOn());
            child.renderTitle(_chart.renderTitle());
        }

        return g;
    });

    _chart._brushing = function () {
        var extent = _chart.extendBrush();
        var brushIsEmpty = _chart.brushIsEmpty(extent);

        for (var i = 0; i < _children.length; ++i) {
            _children[i].filter(null);
            if (!brushIsEmpty) {
                _children[i].filter(extent);
            }
        }
    };

    _chart._prepareYAxis = function () {
        if (leftYAxisChildren().length !== 0) { prepareLeftYAxis(); }
        if (rightYAxisChildren().length !== 0) { prepareRightYAxis(); }

        if (leftYAxisChildren().length > 0 && !_rightAxisGridLines) {
            _chart._renderHorizontalGridLinesForAxis(_chart.g(), _chart.y(), _chart.yAxis());
        }
        else if (rightYAxisChildren().length > 0) {
            _chart._renderHorizontalGridLinesForAxis(_chart.g(), _rightY, _rightYAxis);
        }
    };

    _chart.renderYAxis = function () {
        if (leftYAxisChildren().length !== 0) {
            _chart.renderYAxisAt('y', _chart.yAxis(), _chart.margins().left);
            _chart.renderYAxisLabel('y', _chart.yAxisLabel(), -90);
        }

        if (rightYAxisChildren().length !== 0) {
            _chart.renderYAxisAt('yr', _chart.rightYAxis(), _chart.width() - _chart.margins().right);
            _chart.renderYAxisLabel('yr', _chart.rightYAxisLabel(), 90, _chart.width() - _rightYAxisLabelPadding);
        }
    };

    function prepareRightYAxis() {
        if (_chart.rightY() === undefined || _chart.elasticY()) {
            _chart.rightY(d3.scale.linear());
            _chart.rightY().domain([rightYAxisMin(), rightYAxisMax()]).rangeRound([_chart.yAxisHeight(), 0]);
        }

        _chart.rightY().range([_chart.yAxisHeight(), 0]);
        _chart.rightYAxis(_chart.rightYAxis().scale(_chart.rightY()));

        _chart.rightYAxis().orient('right');
    }

    function prepareLeftYAxis() {
        if (_chart.y() === undefined || _chart.elasticY()) {
            _chart.y(d3.scale.linear());
            _chart.y().domain([yAxisMin(), yAxisMax()]).rangeRound([_chart.yAxisHeight(), 0]);
        }

        _chart.y().range([_chart.yAxisHeight(), 0]);
        _chart.yAxis(_chart.yAxis().scale(_chart.y()));

        _chart.yAxis().orient('left');
    }

    function generateChildG(child, i) {
        child._generateG(_chart.g());
        child.g().attr('class', SUB_CHART_CLASS + ' _' + i);
    }

    _chart.plotData = function () {
        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];

            if (!child.g()) {
                generateChildG(child, i);
            }

            if (_shareColors) {
                child.colors(_chart.colors());
            }

            child.x(_chart.x());

            child.xAxis(_chart.xAxis());

            if (child.useRightYAxis()) {
                child.y(_chart.rightY());
                child.yAxis(_chart.rightYAxis());
            }
            else {
                child.y(_chart.y());
                child.yAxis(_chart.yAxis());
            }

            child.plotData();

            child._activateRenderlets();
        }
    };

    /**
    #### .useRightAxisGridLines(bool)
    Get or set whether to draw gridlines from the right y axis.  Drawing from the left y axis is the
    default behavior. This option is only respected when subcharts with both left and right y-axes
    are present.
    **/
    _chart.useRightAxisGridLines = function (_) {
        if (!arguments) {
            return _rightAxisGridLines;
        }

        _rightAxisGridLines = _;
        return _chart;
    };

    /**
    #### .childOptions({object})
    Get or set chart-specific options for all child charts. This is equivalent to calling `.options`
    on each child chart.
    **/
    _chart.childOptions = function (_) {
        if (!arguments.length) {
            return _childOptions;
        }
        _childOptions = _;
        _children.forEach(function (child) {
            child.options(_childOptions);
        });
        return _chart;
    };

    _chart.fadeDeselectedArea = function () {
        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];
            child.brush(_chart.brush());
            child.fadeDeselectedArea();
        }
    };

    /**
    #### .rightYAxisLabel([labelText])
    Set or get the right y axis label.
    **/
    _chart.rightYAxisLabel = function (_, padding) {
        if (!arguments.length) {
            return _rightYAxisLabel;
        }
        _rightYAxisLabel = _;
        _chart.margins().right -= _rightYAxisLabelPadding;
        _rightYAxisLabelPadding = (padding === undefined) ? DEFAULT_RIGHT_Y_AXIS_LABEL_PADDING : padding;
        _chart.margins().right += _rightYAxisLabelPadding;
        return _chart;
    };

    /**
    #### .compose(subChartArray)
    Combine the given charts into one single composite coordinate grid chart.

    ```js
    // compose the given charts in the array into one single composite chart
    moveChart.compose([
        // when creating sub-chart you need to pass in the parent chart
        dc.lineChart(moveChart)
            .group(indexAvgByMonthGroup) // if group is missing then parent's group will be used
            .valueAccessor(function (d){return d.value.avg;})
            // most of the normal functions will continue to work in a composed chart
            .renderArea(true)
            .stack(monthlyMoveGroup, function (d){return d.value;})
            .title(function (d){
                var value = d.value.avg?d.value.avg:d.value;
                if(isNaN(value)) value = 0;
                return dateFormat(d.key) + '\n' + numberFormat(value);
            }),
        dc.barChart(moveChart)
            .group(volumeByMonthGroup)
            .centerBar(true)
    ]);
    ```

    **/
    _chart.compose = function (charts) {
        _children = charts;
        _children.forEach(function (child) {
            child.height(_chart.height());
            child.width(_chart.width());
            child.margins(_chart.margins());

            if (_shareTitle) {
                child.title(_chart.title());
            }

            child.options(_childOptions);
        });
        return _chart;
    };

    /**
     #### .children()
     Returns the child charts which are composed into the composite chart.
     **/

    _chart.children = function () {
        return _children;
    };

    /**
    #### .shareColors([boolean])
    Get or set color sharing for the chart. If set, the `.colors()` value from this chart
    will be shared with composed children. Additionally if the child chart implements
    Stackable and has not set a custom .colorAccessor, then it will generate a color
    specific to its order in the composition.
    **/
    _chart.shareColors = function (_) {
        if (!arguments.length) {
            return _shareColors;
        }
        _shareColors = _;
        return _chart;
    };

    /**
    #### .shareTitle([[boolean])
    Get or set title sharing for the chart. If set, the `.title()` value from this chart will be
    shared with composed children. Default value is true.
    **/
    _chart.shareTitle = function (_) {
        if (!arguments.length) {
            return _shareTitle;
        }
        _shareTitle = _;
        return _chart;
    };

    /**
    #### .rightY([yScale])
    Get or set the y scale for the right axis. The right y scale is typically automatically
    generated by the chart implementation.

    **/
    _chart.rightY = function (_) {
        if (!arguments.length) {
            return _rightY;
        }
        _rightY = _;
        return _chart;
    };

    function leftYAxisChildren() {
        return _children.filter(function (child) {
            return !child.useRightYAxis();
        });
    }

    function rightYAxisChildren() {
        return _children.filter(function (child) {
            return child.useRightYAxis();
        });
    }

    function getYAxisMin(charts) {
        return charts.map(function (c) {
            return c.yAxisMin();
        });
    }

    delete _chart.yAxisMin;
    function yAxisMin() {
        return d3.min(getYAxisMin(leftYAxisChildren()));
    }

    function rightYAxisMin() {
        return d3.min(getYAxisMin(rightYAxisChildren()));
    }

    function getYAxisMax(charts) {
        return charts.map(function (c) {
            return c.yAxisMax();
        });
    }

    delete _chart.yAxisMax;
    function yAxisMax() {
        return dc.utils.add(d3.max(getYAxisMax(leftYAxisChildren())), _chart.yAxisPadding());
    }

    function rightYAxisMax() {
        return dc.utils.add(d3.max(getYAxisMax(rightYAxisChildren())), _chart.yAxisPadding());
    }

    function getAllXAxisMinFromChildCharts() {
        return _children.map(function (c) {
            return c.xAxisMin();
        });
    }

    dc.override(_chart, 'xAxisMin', function () {
        return dc.utils.subtract(d3.min(getAllXAxisMinFromChildCharts()), _chart.xAxisPadding());
    });

    function getAllXAxisMaxFromChildCharts() {
        return _children.map(function (c) {
            return c.xAxisMax();
        });
    }

    dc.override(_chart, 'xAxisMax', function () {
        return dc.utils.add(d3.max(getAllXAxisMaxFromChildCharts()), _chart.xAxisPadding());
    });

    _chart.legendables = function () {
        return _children.reduce(function (items, child) {
            if (_shareColors) {
                child.colors(_chart.colors());
            }
            items.push.apply(items, child.legendables());
            return items;
        }, []);
    };

    _chart.legendHighlight = function (d) {
        for (var j = 0; j < _children.length; ++j) {
            var child = _children[j];
            child.legendHighlight(d);
        }
    };

    _chart.legendReset = function (d) {
        for (var j = 0; j < _children.length; ++j) {
            var child = _children[j];
            child.legendReset(d);
        }
    };

    _chart.legendToggle = function () {
        console.log('composite should not be getting legendToggle itself');
    };

    /**
    #### .rightYAxis([yAxis])
    Set or get the right y axis used by the composite chart. This function is most useful when y
    axis customization is required. The y axis in dc.js is an instance of a [d3 axis
    object](https://github.com/mbostock/d3/wiki/SVG-Axes#wiki-_axis) therefore it supports any valid
    d3 axis manipulation. **Caution**: The y axis is usually generated internally by dc;
    resetting it may cause unexpected results.
    ```jså
    // customize y axis tick format
    chart.rightYAxis().tickFormat(function (v) {return v + '%';});
    // customize y axis tick values
    chart.rightYAxis().tickValues([0, 100, 200, 300]);
    ```

    **/
    _chart.rightYAxis = function (rightYAxis) {
        if (!arguments.length) {
            return _rightYAxis;
        }
        _rightYAxis = rightYAxis;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

/**
 ## Series Chart

 Includes: [Composite Chart](#composite chart)

 A series chart is a chart that shows multiple series of data overlaid on one chart, where the
 series is specified in the data. It is a specialization of Composite Chart and inherits all
 composite features other than recomposing the chart.

 #### dc.seriesChart(parent[, chartGroup])
 Create a series chart instance and attach it to the given parent element.

 Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

 Returns:
 A newly created series chart instance

 ```js
 // create a series chart under #chart-container1 element using the default global chart group
 var seriesChart1 = dc.seriesChart("#chart-container1");
 // create a series chart under #chart-container2 element using chart group A
 var seriesChart2 = dc.seriesChart("#chart-container2", "chartGroupA");
 ```

 **/
dc.seriesChart = function (parent, chartGroup) {
    var _chart = dc.compositeChart(parent, chartGroup);

    function keySort(a, b) {
        return d3.ascending(_chart.keyAccessor()(a), _chart.keyAccessor()(b));
    }

    var _charts = {};
    var _chartFunction = dc.lineChart;
    var _seriesAccessor;
    var _seriesSort = d3.ascending;
    var _valueSort = keySort;

    _chart._mandatoryAttributes().push('seriesAccessor', 'chart');
    _chart.shareColors(true);

    _chart._preprocessData = function () {
        var keep = [];
        var childrenChanged;
        var nester = d3.nest().key(_seriesAccessor);
        if (_seriesSort) {
            nester.sortKeys(_seriesSort);
        }
        if (_valueSort) {
            nester.sortValues(_valueSort);
        }
        var nesting = nester.entries(_chart.data());
        var children =
            nesting.map(function (sub, i) {
                var subChart = _charts[sub.key] || _chartFunction.call(_chart, _chart, chartGroup, sub.key, i);
                if (!_charts[sub.key]) {
                    childrenChanged = true;
                }
                _charts[sub.key] = subChart;
                keep.push(sub.key);
                return subChart
                    .dimension(_chart.dimension())
                    .group({all:d3.functor(sub.values)}, sub.key)
                    .keyAccessor(_chart.keyAccessor())
                    .valueAccessor(_chart.valueAccessor())
                    .brushOn(_chart.brushOn());
            });
        // this works around the fact compositeChart doesn't really
        // have a removal interface
        Object.keys(_charts)
            .filter(function (c) {return keep.indexOf(c) === -1;})
            .forEach(function (c) {
                clearChart(c);
                childrenChanged = true;
            });
        _chart._compose(children);
        if (childrenChanged && _chart.legend()) {
            _chart.legend().render();
        }
    };

    function clearChart(c) {
        if (_charts[c].g()) {
            _charts[c].g().remove();
        }
        delete _charts[c];
    }

    function resetChildren() {
        Object.keys(_charts).map(clearChart);
        _charts = {};
    }

    /**
     #### .chart([function])
     Get or set the chart function, which generates the child charts.  Default: dc.lineChart

     ```
     // put interpolation on the line charts used for the series
     chart.chart(function(c) { return dc.lineChart(c).interpolate('basis'); })
     // do a scatter series chart
     chart.chart(dc.scatterPlot)
     ```

     **/
    _chart.chart = function (_) {
        if (!arguments.length) {
            return _chartFunction;
        }
        _chartFunction = _;
        resetChildren();
        return _chart;
    };

    /**
     #### .seriesAccessor([accessor])
     Get or set accessor function for the displayed series. Given a datum, this function
     should return the series that datum belongs to.
     **/
    _chart.seriesAccessor = function (_) {
        if (!arguments.length) {
            return _seriesAccessor;
        }
        _seriesAccessor = _;
        resetChildren();
        return _chart;
    };

    /**
     #### .seriesSort([sortFunction])
     Get or set a function to sort the list of series by, given series values.

     Example:
     ```
     chart.seriesSort(d3.descending);
     ```
     **/
    _chart.seriesSort = function (_) {
        if (!arguments.length) {
            return _seriesSort;
        }
        _seriesSort = _;
        resetChildren();
        return _chart;
    };

    /**
     #### .valueSort([sortFunction])
     Get or set a function to sort each series values by. By default this is the key accessor which,
     for example, will ensure a lineChart series connects its points in increasing key/x order,
     rather than haphazardly.
    **/
    _chart.valueSort = function (_) {
        if (!arguments.length) {
            return _valueSort;
        }
        _valueSort = _;
        resetChildren();
        return _chart;
    };

    // make compose private
    _chart._compose = _chart.compose;
    delete _chart.compose;

    return _chart;
};

/**
## Geo Choropleth Chart
Includes: [Color Mixin](#color-mixin), [Base Mixin](#base-mixin)

The geo choropleth chart is designed as an easy way to create a crossfilter driven choropleth map
from GeoJson data. This chart implementation was inspired by [the great d3 choropleth
example](http://bl.ocks.org/4060606).

Examples:
* [US Venture Capital Landscape 2011](http://dc-js.github.com/dc.js/vc/index.html)
#### dc.geoChoroplethChart(parent[, chartGroup])
Create a choropleth chart instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created choropleth chart instance

```js
// create a choropleth chart under '#us-chart' element using the default global chart group
var chart1 = dc.geoChoroplethChart('#us-chart');
// create a choropleth chart under '#us-chart2' element using chart group A
var chart2 = dc.compositeChart('#us-chart2', 'chartGroupA');
```

**/
dc.geoChoroplethChart = function (parent, chartGroup) {
    var _chart = dc.colorMixin(dc.baseMixin({}));

    _chart.colorAccessor(function (d) {
        return d || 0;
    });

    var _geoPath = d3.geo.path();
    var _projectionFlag;

    var _geoJsons = [];

    _chart._doRender = function () {
        _chart.resetSvg();
        for (var layerIndex = 0; layerIndex < _geoJsons.length; ++layerIndex) {
            var states = _chart.svg().append('g')
                .attr('class', 'layer' + layerIndex);

            var regionG = states.selectAll('g.' + geoJson(layerIndex).name)
                .data(geoJson(layerIndex).data)
                .enter()
                .append('g')
                .attr('class', geoJson(layerIndex).name);

            regionG
                .append('path')
                .attr('fill', 'white')
                .attr('d', _geoPath);

            regionG.append('title');

            plotData(layerIndex);
        }
        _projectionFlag = false;
    };

    function plotData(layerIndex) {
        var data = generateLayeredData();

        if (isDataLayer(layerIndex)) {
            var regionG = renderRegionG(layerIndex);

            renderPaths(regionG, layerIndex, data);

            renderTitle(regionG, layerIndex, data);
        }
    }

    function generateLayeredData() {
        var data = {};
        var groupAll = _chart.data();
        for (var i = 0; i < groupAll.length; ++i) {
            data[_chart.keyAccessor()(groupAll[i])] = _chart.valueAccessor()(groupAll[i]);
        }
        return data;
    }

    function isDataLayer(layerIndex) {
        return geoJson(layerIndex).keyAccessor;
    }

    function renderRegionG(layerIndex) {
        var regionG = _chart.svg()
            .selectAll(layerSelector(layerIndex))
            .classed('selected', function (d) {
                return isSelected(layerIndex, d);
            })
            .classed('deselected', function (d) {
                return isDeselected(layerIndex, d);
            })
            .attr('class', function (d) {
                var layerNameClass = geoJson(layerIndex).name;
                var regionClass = dc.utils.nameToId(geoJson(layerIndex).keyAccessor(d));
                var baseClasses = layerNameClass + ' ' + regionClass;
                if (isSelected(layerIndex, d)) {
                    baseClasses += ' selected';
                }
                if (isDeselected(layerIndex, d)) {
                    baseClasses += ' deselected';
                }
                return baseClasses;
            });
        return regionG;
    }

    function layerSelector(layerIndex) {
        return 'g.layer' + layerIndex + ' g.' + geoJson(layerIndex).name;
    }

    function isSelected(layerIndex, d) {
        return _chart.hasFilter() && _chart.hasFilter(getKey(layerIndex, d));
    }

    function isDeselected(layerIndex, d) {
        return _chart.hasFilter() && !_chart.hasFilter(getKey(layerIndex, d));
    }

    function getKey(layerIndex, d) {
        return geoJson(layerIndex).keyAccessor(d);
    }

    function geoJson(index) {
        return _geoJsons[index];
    }

    function renderPaths(regionG, layerIndex, data) {
        var paths = regionG
            .select('path')
            .attr('fill', function () {
                var currentFill = d3.select(this).attr('fill');
                if (currentFill) {
                    return currentFill;
                }
                return 'none';
            })
            .on('click', function (d) {
                return _chart.onClick(d, layerIndex);
            });

        dc.transition(paths, _chart.transitionDuration()).attr('fill', function (d, i) {
            return _chart.getColor(data[geoJson(layerIndex).keyAccessor(d)], i);
        });
    }

    _chart.onClick = function (d, layerIndex) {
        var selectedRegion = geoJson(layerIndex).keyAccessor(d);
        dc.events.trigger(function () {
            _chart.filter(selectedRegion);
            _chart.redrawGroup();
        });
    };

    function renderTitle(regionG, layerIndex, data) {
        if (_chart.renderTitle()) {
            regionG.selectAll('title').text(function (d) {
                var key = getKey(layerIndex, d);
                var value = data[key];
                return _chart.title()({key: key, value: value});
            });
        }
    }

    _chart._doRedraw = function () {
        for (var layerIndex = 0; layerIndex < _geoJsons.length; ++layerIndex) {
            plotData(layerIndex);
            if (_projectionFlag) {
                _chart.svg().selectAll('g.' + geoJson(layerIndex).name + ' path').attr('d', _geoPath);
            }
        }
        _projectionFlag = false;
    };

    /**
    #### .overlayGeoJson(json, name, keyAccessor) - **mandatory**
    Use this function to insert a new GeoJson map layer. This function can be invoked multiple times
    if you have multiple GeoJson data layers to render on top of each other. If you overlay multiple
    layers with the same name the new overlay will override the existing one.

    Parameters:
    * json - GeoJson feed
    * name - name of the layer
    * keyAccessor - accessor function used to extract 'key' from the GeoJson data. The key extracted by
    this function should match the keys returned by the crossfilter groups.

    ```js
    // insert a layer for rendering US states
    chart.overlayGeoJson(statesJson.features, 'state', function(d) {
        return d.properties.name;
    });
    ```

    **/
    _chart.overlayGeoJson = function (json, name, keyAccessor) {
        for (var i = 0; i < _geoJsons.length; ++i) {
            if (_geoJsons[i].name === name) {
                _geoJsons[i].data = json;
                _geoJsons[i].keyAccessor = keyAccessor;
                return _chart;
            }
        }
        _geoJsons.push({name: name, data: json, keyAccessor: keyAccessor});
        return _chart;
    };

    /**
    #### .projection(projection)
    Set custom geo projection function. See the available [d3 geo projection
    functions](https://github.com/mbostock/d3/wiki/Geo-Projections).  Default value: albersUsa.

    **/
    _chart.projection = function (projection) {
        _geoPath.projection(projection);
        _projectionFlag = true;
        return _chart;
    };

    /**
    #### .geoJsons()
    Returns all GeoJson layers currently registered with this chart. The returned array is a
    reference to this chart's internal data structure, so any modification to this array will also
    modify this chart's internal registration.

    Returns an array of objects containing fields {name, data, accessor}

    **/
    _chart.geoJsons = function () {
        return _geoJsons;
    };

    /**
    #### .geoPath()
    Returns the [d3.geo.path](https://github.com/mbostock/d3/wiki/Geo-Paths#path) object used to
    render the projection and features.  Can be useful for figuring out the bounding box of the
    feature set and thus a way to calculate scale and translation for the projection.

    **/
    _chart.geoPath = function () {
        return _geoPath;
    };

    /**
    #### .removeGeoJson(name)
    Remove a GeoJson layer from this chart by name

    **/
    _chart.removeGeoJson = function (name) {
        var geoJsons = [];

        for (var i = 0; i < _geoJsons.length; ++i) {
            var layer = _geoJsons[i];
            if (layer.name !== name) {
                geoJsons.push(layer);
            }
        }

        _geoJsons = geoJsons;

        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

/**
## Bubble Overlay Chart
Includes: [Bubble Mixin](#bubble-mixin), [Base Mixin](#base-mixin)

The bubble overlay chart is quite different from the typical bubble chart. With the bubble overlay
chart you can arbitrarily place bubbles on an existing svg or bitmap image, thus changing the
typical x and y positioning while retaining the capability to visualize data using bubble radius
and coloring.

Examples:
* [Canadian City Crime Stats](http://dc-js.github.com/dc.js/crime/index.html)
#### dc.bubbleOverlay(parent[, chartGroup])
Create a bubble overlay chart instance and attach it to the given parent element.

Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
 off-screen. Typically this element should also be the parent of the underlying image.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created bubble overlay chart instance

```js
// create a bubble overlay chart on top of the '#chart-container1 svg' element using the default global chart group
var bubbleChart1 = dc.bubbleOverlayChart('#chart-container1').svg(d3.select('#chart-container1 svg'));
// create a bubble overlay chart on top of the '#chart-container2 svg' element using chart group A
var bubbleChart2 = dc.compositeChart('#chart-container2', 'chartGroupA').svg(d3.select('#chart-container2 svg'));
```
#### .svg(imageElement) - **mandatory**
Set the underlying svg image element. Unlike other dc charts this chart will not generate a svg
element; therefore the bubble overlay chart will not work if this function is not invoked. If the
underlying image is a bitmap, then an empty svg will need to be created on top of the image.

```js
// set up underlying svg element
chart.svg(d3.select('#chart svg'));
```

**/
dc.bubbleOverlay = function (root, chartGroup) {
    var BUBBLE_OVERLAY_CLASS = 'bubble-overlay';
    var BUBBLE_NODE_CLASS = 'node';
    var BUBBLE_CLASS = 'bubble';

    var _chart = dc.bubbleMixin(dc.baseMixin({}));
    var _g;
    var _points = [];

    _chart.transitionDuration(750);

    _chart.radiusValueAccessor(function (d) {
        return d.value;
    });

    /**
    #### .point(name, x, y) - **mandatory**
    Set up a data point on the overlay. The name of a data point should match a specific 'key' among
    data groups generated using keyAccessor.  If a match is found (point name <-> data group key)
    then a bubble will be generated at the position specified by the function. x and y
    value specified here are relative to the underlying svg.

    **/
    _chart.point = function (name, x, y) {
        _points.push({name: name, x: x, y: y});
        return _chart;
    };

    _chart._doRender = function () {
        _g = initOverlayG();

        _chart.r().range([_chart.MIN_RADIUS, _chart.width() * _chart.maxBubbleRelativeSize()]);

        initializeBubbles();

        _chart.fadeDeselectedArea();

        return _chart;
    };

    function initOverlayG() {
        _g = _chart.select('g.' + BUBBLE_OVERLAY_CLASS);
        if (_g.empty()) {
            _g = _chart.svg().append('g').attr('class', BUBBLE_OVERLAY_CLASS);
        }
        return _g;
    }

    function initializeBubbles() {
        var data = mapData();

        _points.forEach(function (point) {
            var nodeG = getNodeG(point, data);

            var circle = nodeG.select('circle.' + BUBBLE_CLASS);

            if (circle.empty()) {
                circle = nodeG.append('circle')
                    .attr('class', BUBBLE_CLASS)
                    .attr('r', 0)
                    .attr('fill', _chart.getColor)
                    .on('click', _chart.onClick);
            }

            dc.transition(circle, _chart.transitionDuration())
                .attr('r', function (d) {
                    return _chart.bubbleR(d);
                });

            _chart._doRenderLabel(nodeG);

            _chart._doRenderTitles(nodeG);
        });
    }

    function mapData() {
        var data = {};
        _chart.data().forEach(function (datum) {
            data[_chart.keyAccessor()(datum)] = datum;
        });
        return data;
    }

    function getNodeG(point, data) {
        var bubbleNodeClass = BUBBLE_NODE_CLASS + ' ' + dc.utils.nameToId(point.name);

        var nodeG = _g.select('g.' + dc.utils.nameToId(point.name));

        if (nodeG.empty()) {
            nodeG = _g.append('g')
                .attr('class', bubbleNodeClass)
                .attr('transform', 'translate(' + point.x + ',' + point.y + ')');
        }

        nodeG.datum(data[point.name]);

        return nodeG;
    }

    _chart._doRedraw = function () {
        updateBubbles();

        _chart.fadeDeselectedArea();

        return _chart;
    };

    function updateBubbles() {
        var data = mapData();

        _points.forEach(function (point) {
            var nodeG = getNodeG(point, data);

            var circle = nodeG.select('circle.' + BUBBLE_CLASS);

            dc.transition(circle, _chart.transitionDuration())
                .attr('r', function (d) {
                    return _chart.bubbleR(d);
                })
                .attr('fill', _chart.getColor);

            _chart.doUpdateLabels(nodeG);

            _chart.doUpdateTitles(nodeG);
        });
    }

    _chart.debug = function (flag) {
        if (flag) {
            var debugG = _chart.select('g.' + dc.constants.DEBUG_GROUP_CLASS);

            if (debugG.empty()) {
                debugG = _chart.svg()
                    .append('g')
                    .attr('class', dc.constants.DEBUG_GROUP_CLASS);
            }

            var debugText = debugG.append('text')
                .attr('x', 10)
                .attr('y', 20);

            debugG
                .append('rect')
                .attr('width', _chart.width())
                .attr('height', _chart.height())
                .on('mousemove', function () {
                    var position = d3.mouse(debugG.node());
                    var msg = position[0] + ', ' + position[1];
                    debugText.text(msg);
                });
        } else {
            _chart.selectAll('.debug').remove();
        }

        return _chart;
    };

    _chart.anchor(root, chartGroup);

    return _chart;
};

/**
## Row Chart
Includes: [Cap Mixin](#cap-mixin), [Margin Mixin](#margin-mixin), [Color Mixin](#color-mixin), [Base Mixin](#base-mixin)

Concrete row chart implementation.
#### dc.rowChart(parent[, chartGroup])
Create a row chart instance and attach it to the given parent element.

Parameters:

* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created row chart instance

```js
// create a row chart under #chart-container1 element using the default global chart group
var chart1 = dc.rowChart('#chart-container1');
// create a row chart under #chart-container2 element using chart group A
var chart2 = dc.rowChart('#chart-container2', 'chartGroupA');
```

**/
dc.rowChart = function (parent, chartGroup) {

    var _g;

    var _labelOffsetX = 10;
    var _labelOffsetY = 15;
    var _hasLabelOffsetY = false;
    var _dyOffset = '0.35em';  // this helps center labels https://github.com/mbostock/d3/wiki/SVG-Shapes#svg_text
    var _titleLabelOffsetX = 2;

    var _gap = 5;

    var _fixedBarHeight = false;
    var _rowCssClass = 'row';
    var _titleRowCssClass = 'titlerow';
    var _renderTitleLabel = false;

    var _chart = dc.capMixin(dc.marginMixin(dc.colorMixin(dc.baseMixin({}))));

    var _x;

    var _elasticX;

    var _xAxis = d3.svg.axis().orient('bottom');

    var _rowData;

    _chart.rowsCap = _chart.cap;

    function calculateAxisScale() {
        if (!_x || _elasticX) {
            var extent = d3.extent(_rowData, _chart.cappedValueAccessor);
            if (extent[0] > 0) {
                extent[0] = 0;
            }
            _x = d3.scale.linear().domain(extent)
                .range([0, _chart.effectiveWidth()]);
        }
        _xAxis.scale(_x);
    }

    function drawAxis() {
        var axisG = _g.select('g.axis');

        calculateAxisScale();

        if (axisG.empty()) {
            axisG = _g.append('g').attr('class', 'axis')
                .attr('transform', 'translate(0, ' + _chart.effectiveHeight() + ')');
        }

        dc.transition(axisG, _chart.transitionDuration())
            .call(_xAxis);
    }

    _chart._doRender = function () {
        _chart.resetSvg();

        _g = _chart.svg()
            .append('g')
            .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart.margins().top + ')');

        drawChart();

        return _chart;
    };

    _chart.title(function (d) {
        return _chart.cappedKeyAccessor(d) + ': ' + _chart.cappedValueAccessor(d);
    });

    _chart.label(_chart.cappedKeyAccessor);

    /**
     #### .x([scale])
     Gets or sets the x scale. The x scale can be any d3
     [quantitive scale](https://github.com/mbostock/d3/wiki/Quantitative-Scales)
     **/
    _chart.x = function (x) {
        if (!arguments.length) {
            return _x;
        }
        _x = x;
        return _chart;
    };

    function drawGridLines() {
        _g.selectAll('g.tick')
            .select('line.grid-line')
            .remove();

        _g.selectAll('g.tick')
            .append('line')
            .attr('class', 'grid-line')
            .attr('x1', 0)
            .attr('y1', 0)
            .attr('x2', 0)
            .attr('y2', function () {
                return -_chart.effectiveHeight();
            });
    }

    function drawChart() {
        _rowData = _chart.data();

        drawAxis();
        drawGridLines();

        var rows = _g.selectAll('g.' + _rowCssClass)
            .data(_rowData);

        createElements(rows);
        removeElements(rows);
        updateElements(rows);
    }

    function createElements(rows) {
        var rowEnter = rows.enter()
            .append('g')
            .attr('class', function (d, i) {
                return _rowCssClass + ' _' + i;
            });

        rowEnter.append('rect').attr('width', 0);

        createLabels(rowEnter);
        updateLabels(rows);
    }

    function removeElements(rows) {
        rows.exit().remove();
    }

    function rootValue() {
        var root = _x(0);
        return (root === -Infinity || root !== root) ? _x(1) : root;
    }

    function updateElements(rows) {
        var n = _rowData.length;

        var height;
        if (!_fixedBarHeight) {
            height = (_chart.effectiveHeight() - (n + 1) * _gap) / n;
        } else {
            height = _fixedBarHeight;
        }

        // vertically align label in center unless they override the value via property setter
        if (!_hasLabelOffsetY) {
            _labelOffsetY = height / 2;
        }

        var rect = rows.attr('transform', function (d, i) {
                return 'translate(0,' + ((i + 1) * _gap + i * height) + ')';
            }).select('rect')
            .attr('height', height)
            .attr('fill', _chart.getColor)
            .on('click', onClick)
            .classed('deselected', function (d) {
                return (_chart.hasFilter()) ? !isSelectedRow(d) : false;
            })
            .classed('selected', function (d) {
                return (_chart.hasFilter()) ? isSelectedRow(d) : false;
            });

        dc.transition(rect, _chart.transitionDuration())
            .attr('width', function (d) {
                return Math.abs(rootValue() - _x(_chart.valueAccessor()(d)));
            })
            .attr('transform', translateX);

        createTitles(rows);
        updateLabels(rows);
    }

    function createTitles(rows) {
        if (_chart.renderTitle()) {
            rows.selectAll('title').remove();
            rows.append('title').text(_chart.title());
        }
    }

    function createLabels(rowEnter) {
        if (_chart.renderLabel()) {
            rowEnter.append('text')
                .on('click', onClick);
        }
        if (_chart.renderTitleLabel()) {
            rowEnter.append('text')
                .attr('class', _titleRowCssClass)
                .on('click', onClick);
        }
    }

    function updateLabels(rows) {
        if (_chart.renderLabel()) {
            var lab = rows.select('text')
                .attr('x', _labelOffsetX)
                .attr('y', _labelOffsetY)
                .attr('dy', _dyOffset)
                .on('click', onClick)
                .attr('class', function (d, i) {
                    return _rowCssClass + ' _' + i;
                })
                .text(function (d) {
                    return _chart.label()(d);
                });
            dc.transition(lab, _chart.transitionDuration())
                .attr('transform', translateX);
        }
        if (_chart.renderTitleLabel()) {
            var titlelab = rows.select('.' + _titleRowCssClass)
                    .attr('x', _chart.effectiveWidth() - _titleLabelOffsetX)
                    .attr('y', _labelOffsetY)
                    .attr('text-anchor', 'end')
                    .on('click', onClick)
                    .attr('class', function (d, i) {
                        return _titleRowCssClass + ' _' + i ;
                    })
                    .text(function (d) {
                        return _chart.title()(d);
                    });
            dc.transition(titlelab, _chart.transitionDuration())
                .attr('transform', translateX);
        }
    }

    /**
    #### .renderTitleLabel(boolean)
    Turn on/off Title label rendering (values) using SVG style of text-anchor 'end'

    **/
    _chart.renderTitleLabel = function (_) {
        if (!arguments.length) {
            return _renderTitleLabel;
        }
        _renderTitleLabel = _;
        return _chart;
    };

    function onClick(d) {
        _chart.onClick(d);
    }

    function translateX(d) {
        var x = _x(_chart.cappedValueAccessor(d)),
            x0 = rootValue(),
            s = x > x0 ? x0 : x;
        return 'translate(' + s + ',0)';
    }

    _chart._doRedraw = function () {
        drawChart();
        return _chart;
    };

    /**
    #### .xAxis()
    Get the x axis for the row chart instance.  Note: not settable for row charts.
    See the [d3 axis object](https://github.com/mbostock/d3/wiki/SVG-Axes#wiki-axis) documention for more information.
    ```js
    // customize x axis tick format
    chart.xAxis().tickFormat(function (v) {return v + '%';});
    // customize x axis tick values
    chart.xAxis().tickValues([0, 100, 200, 300]);
    ```

    **/
    _chart.xAxis = function () {
        return _xAxis;
    };

    /**
    #### .fixedBarHeight([height])
    Get or set the fixed bar height. Default is [false] which will auto-scale bars.
    For example, if you want to fix the height for a specific number of bars (useful in TopN charts)
    you could fix height as follows (where count = total number of bars in your TopN and gap is
    your vertical gap space).
    ```js
     chart.fixedBarHeight( chartheight - (count + 1) * gap / count);
    ```
    **/
    _chart.fixedBarHeight = function (g) {
        if (!arguments.length) {
            return _fixedBarHeight;
        }
        _fixedBarHeight = g;
        return _chart;
    };

    /**
    #### .gap([gap])
    Get or set the vertical gap space between rows on a particular row chart instance. Default gap is 5px;

    **/
    _chart.gap = function (g) {
        if (!arguments.length) {
            return _gap;
        }
        _gap = g;
        return _chart;
    };

    /**
    #### .elasticX([boolean])
    Get or set the elasticity on x axis. If this attribute is set to true, then the x axis will rescle to auto-fit the
    data range when filtered.

    **/
    _chart.elasticX = function (_) {
        if (!arguments.length) {
            return _elasticX;
        }
        _elasticX = _;
        return _chart;
    };

    /**
    #### .labelOffsetX([x])
    Get or set the x offset (horizontal space to the top left corner of a row) for labels on a particular row chart.
    Default x offset is 10px;

    **/
    _chart.labelOffsetX = function (o) {
        if (!arguments.length) {
            return _labelOffsetX;
        }
        _labelOffsetX = o;
        return _chart;
    };

    /**
    #### .labelOffsetY([y])
    Get or set the y offset (vertical space to the top left corner of a row) for labels on a particular row chart.
    Default y offset is 15px;

    **/
    _chart.labelOffsetY = function (o) {
        if (!arguments.length) {
            return _labelOffsetY;
        }
        _labelOffsetY = o;
        _hasLabelOffsetY = true;
        return _chart;
    };

    /**
    #### .titleLabelOffsetx([x])
    Get of set the x offset (horizontal space between right edge of row and right edge or text.
    Default x offset is 2px;

    **/
    _chart.titleLabelOffsetX = function (o) {
        if (!arguments.length) {
            return _titleLabelOffsetX;
        }
        _titleLabelOffsetX = o;
        return _chart;
    };

    function isSelectedRow (d) {
        return _chart.hasFilter(_chart.cappedKeyAccessor(d));
    }

    return _chart.anchor(parent, chartGroup);
};

/**
## Legend
Legend is a attachable widget that can be added to other dc charts to render horizontal legend
labels.

```js
chart.legend(dc.legend().x(400).y(10).itemHeight(13).gap(5))
```

Examples:
* [Nasdaq 100 Index](http://dc-js.github.com/dc.js/)
* [Canadian City Crime Stats](http://dc-js.github.com/dc.js/crime/index.html)

**/
dc.legend = function () {
    var LABEL_GAP = 2;

    var _legend = {},
        _parent,
        _x = 0,
        _y = 0,
        _itemHeight = 12,
        _gap = 5,
        _horizontal = false,
        _legendWidth = 560,
        _itemWidth = 70;

    var _g;

    _legend.parent = function (p) {
        if (!arguments.length) {
            return _parent;
        }
        _parent = p;
        return _legend;
    };

    _legend.render = function () {
        _parent.svg().select('g.dc-legend').remove();
        _g = _parent.svg().append('g')
            .attr('class', 'dc-legend')
            .attr('transform', 'translate(' + _x + ',' + _y + ')');
        var legendables = _parent.legendables();

        var itemEnter = _g.selectAll('g.dc-legend-item')
            .data(legendables)
            .enter()
            .append('g')
            .attr('class', 'dc-legend-item')
            .on('mouseover', function (d) {
                _parent.legendHighlight(d);
            })
            .on('mouseout', function (d) {
                _parent.legendReset(d);
            })
            .on('click', function (d) {
                d.chart.legendToggle(d);
            });

        _g.selectAll('g.dc-legend-item')
            .classed('fadeout', function (d) {
                return d.chart.isLegendableHidden(d);
            });

        if (legendables.some(dc.pluck('dashstyle'))) {
            itemEnter
                .append('line')
                .attr('x1', 0)
                .attr('y1', _itemHeight / 2)
                .attr('x2', _itemHeight)
                .attr('y2', _itemHeight / 2)
                .attr('stroke-width', 2)
                .attr('stroke-dasharray', dc.pluck('dashstyle'))
                .attr('stroke', dc.pluck('color'));
        } else {
            itemEnter
                .append('rect')
                .attr('width', _itemHeight)
                .attr('height', _itemHeight)
                .attr('fill', function (d) {return d ? d.color : 'blue';});
        }

        itemEnter.append('text')
                .text(dc.pluck('name'))
                .attr('x', _itemHeight + LABEL_GAP)
                .attr('y', function () {
                    return _itemHeight / 2 + (this.clientHeight ? this.clientHeight : 13) / 2 - 2;
                });

        var _cumulativeLegendTextWidth = 0;
        var row = 0;
        itemEnter.attr('transform', function (d, i) {
            if (_horizontal) {
                var translateBy = 'translate(' + _cumulativeLegendTextWidth + ',' + row * legendItemHeight() + ')';
                if ((_cumulativeLegendTextWidth + _itemWidth) >= _legendWidth) {
                    ++row ;
                    _cumulativeLegendTextWidth = 0 ;
                } else {
                    _cumulativeLegendTextWidth += _itemWidth;
                }
                return translateBy;
            }
            else {
                return 'translate(0,' + i * legendItemHeight() + ')';
            }
        });
    };

    function legendItemHeight() {
        return _gap + _itemHeight;
    }

    /**
    #### .x([value])
    Set or get x coordinate for legend widget. Default: 0.
    **/
    _legend.x = function (x) {
        if (!arguments.length) {
            return _x;
        }
        _x = x;
        return _legend;
    };

    /**
    #### .y([value])
    Set or get y coordinate for legend widget. Default: 0.
    **/
    _legend.y = function (y) {
        if (!arguments.length) {
            return _y;
        }
        _y = y;
        return _legend;
    };

    /**
    #### .gap([value])
    Set or get gap between legend items. Default: 5.
    **/
    _legend.gap = function (gap) {
        if (!arguments.length) {
            return _gap;
        }
        _gap = gap;
        return _legend;
    };

    /**
    #### .itemHeight([value])
    Set or get legend item height. Default: 12.
    **/
    _legend.itemHeight = function (h) {
        if (!arguments.length) {
            return _itemHeight;
        }
        _itemHeight = h;
        return _legend;
    };

    /**
    #### .horizontal([boolean])
    Position legend horizontally instead of vertically
    **/
    _legend.horizontal = function (_) {
        if (!arguments.length) {
            return _horizontal;
        }
        _horizontal = _;
        return _legend;
    };

    /**
    #### .legendWidth([value])
    Maximum width for horizontal legend. Default: 560.
    **/
    _legend.legendWidth = function (_) {
        if (!arguments.length) {
            return _legendWidth;
        }
        _legendWidth = _;
        return _legend;
    };

    /**
    #### .itemWidth([value])
    legendItem width for horizontal legend. Default: 70.
    **/
    _legend.itemWidth = function (_) {
        if (!arguments.length) {
            return _itemWidth;
        }
        _itemWidth = _;
        return _legend;
    };

    return _legend;
};

/**
## Scatter Plot
Includes: [Coordinate Grid Mixin](#coordinate-grid-mixin)

A scatter plot chart
#### dc.scatterPlot(parent[, chartGroup])
Create a scatter plot instance and attach it to the given parent element.

Parameters:

* parent : string | node | selection | compositeChart - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
 If the scatter plot is a sub-chart in a [Composite Chart](#composite-chart) then pass in the parent composite
 chart instance.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

Returns:
A newly created scatter plot instance

```js
// create a scatter plot under #chart-container1 element using the default global chart group
var chart1 = dc.scatterPlot('#chart-container1');
// create a scatter plot under #chart-container2 element using chart group A
var chart2 = dc.scatterPlot('#chart-container2', 'chartGroupA');
// create a sub-chart under a composite parent chart
var chart3 = dc.scatterPlot(compositeChart);
```

 **/
dc.scatterPlot = function (parent, chartGroup) {
    var _chart = dc.coordinateGridMixin({});
    var _symbol = d3.svg.symbol();

    var _existenceAccessor = function (d) { return d.value; };

    var originalKeyAccessor = _chart.keyAccessor();
    _chart.keyAccessor(function (d) { return originalKeyAccessor(d)[0]; });
    _chart.valueAccessor(function (d) { return originalKeyAccessor(d)[1]; });
    _chart.colorAccessor(function () { return _chart._groupName; });

    var _locator = function (d) {
        return 'translate(' + _chart.x()(_chart.keyAccessor()(d)) + ',' +
                              _chart.y()(_chart.valueAccessor()(d)) + ')';
    };

    var _symbolSize = 3;
    var _highlightedSize = 5;
    var _hiddenSize = 0;

    _symbol.size(function (d) {
        if (!_existenceAccessor(d)) {
            return _hiddenSize;
        } else if (this.filtered) {
            return Math.pow(_highlightedSize, 2);
        } else {
            return Math.pow(_symbolSize, 2);
        }
    });

    dc.override(_chart, '_filter', function (filter) {
        if (!arguments.length) {
            return _chart.__filter();
        }

        return _chart.__filter(dc.filters.RangedTwoDimensionalFilter(filter));
    });

    _chart.plotData = function () {
        var symbols = _chart.chartBodyG().selectAll('path.symbol')
            .data(_chart.data());

        symbols
            .enter()
        .append('path')
            .attr('class', 'symbol')
            .attr('opacity', 0)
            .attr('fill', _chart.getColor)
            .attr('transform', _locator);

        dc.transition(symbols, _chart.transitionDuration())
            .attr('opacity', function (d) { return _existenceAccessor(d) ? 1 : 0; })
            .attr('fill', _chart.getColor)
            .attr('transform', _locator)
            .attr('d', _symbol);

        dc.transition(symbols.exit(), _chart.transitionDuration())
            .attr('opacity', 0).remove();
    };

    /**
    #### .existenceAccessor([accessor])
    Get or set the existence accessor.  If a point exists, it is drawn with symbolSize radius and
    opacity 1; if it does not exist, it is drawn with hiddenSize radius and opacity 0. By default,
    the existence accessor checks if the reduced value is truthy.
    **/

    _chart.existenceAccessor = function (acc) {
        if (!arguments.length) {
            return _existenceAccessor;
        }
        _existenceAccessor = acc;
        return this;
    };

    /**
    #### .symbol([type])
    Get or set the symbol type used for each point. By default the symbol is a circle. See the D3
    [docs](https://github.com/mbostock/d3/wiki/SVG-Shapes#wiki-symbol_type) for acceptable types.
    Type can be a constant or an accessor.

    **/
    _chart.symbol = function (type) {
        if (!arguments.length) {
            return _symbol.type();
        }
        _symbol.type(type);
        return _chart;
    };

    /**
    #### .symbolSize([radius])
    Set or get radius for symbols. Default: 3.

    **/
    _chart.symbolSize = function (s) {
        if (!arguments.length) {
            return _symbolSize;
        }
        _symbolSize = s;
        return _chart;
    };

    /**
    #### .highlightedSize([radius])
    Set or get radius for highlighted symbols. Default: 4.

    **/
    _chart.highlightedSize = function (s) {
        if (!arguments.length) {
            return _highlightedSize;
        }
        _highlightedSize = s;
        return _chart;
    };

    /**
    #### .hiddenSize([radius])
    Set or get radius for symbols when the group is empty. Default: 0.

    **/
    _chart.hiddenSize = function (s) {
        if (!arguments.length) {
            return _hiddenSize;
        }
        _hiddenSize = s;
        return _chart;
    };

    _chart.legendables = function () {
        return [{chart: _chart, name: _chart._groupName, color: _chart.getColor()}];
    };

    _chart.legendHighlight = function (d) {
        resizeSymbolsWhere(function (symbol) {
            return symbol.attr('fill') === d.color;
        }, _highlightedSize);
        _chart.selectAll('.chart-body path.symbol').filter(function () {
            return d3.select(this).attr('fill') !== d.color;
        }).classed('fadeout', true);
    };

    _chart.legendReset = function (d) {
        resizeSymbolsWhere(function (symbol) {
            return symbol.attr('fill') === d.color;
        }, _symbolSize);
        _chart.selectAll('.chart-body path.symbol').filter(function () {
            return d3.select(this).attr('fill') !== d.color;
        }).classed('fadeout', false);
    };

    function resizeSymbolsWhere(condition, size) {
        var symbols = _chart.selectAll('.chart-body path.symbol').filter(function () {
            return condition(d3.select(this));
        });
        var oldSize = _symbol.size();
        _symbol.size(Math.pow(size, 2));
        dc.transition(symbols, _chart.transitionDuration()).attr('d', _symbol);
        _symbol.size(oldSize);
    }

    _chart.setHandlePaths = function () {
        // no handle paths for poly-brushes
    };

    _chart.extendBrush = function () {
        var extent = _chart.brush().extent();
        if (_chart.round()) {
            extent[0] = extent[0].map(_chart.round());
            extent[1] = extent[1].map(_chart.round());

            _chart.g().select('.brush')
                .call(_chart.brush().extent(extent));
        }
        return extent;
    };

    _chart.brushIsEmpty = function (extent) {
        return _chart.brush().empty() || !extent || extent[0][0] >= extent[1][0] || extent[0][1] >= extent[1][1];
    };

    function resizeFiltered(filter) {
        var symbols = _chart.selectAll('.chart-body path.symbol').each(function (d) {
            this.filtered = filter && filter.isFiltered(d.key);
        });

        dc.transition(symbols, _chart.transitionDuration()).attr('d', _symbol);
    }

    _chart._brushing = function () {
        var extent = _chart.extendBrush();

        _chart.redrawBrush(_chart.g());

        if (_chart.brushIsEmpty(extent)) {
            dc.events.trigger(function () {
                _chart.filter(null);
                _chart.redrawGroup();
            });

            resizeFiltered(false);

        } else {
            var ranged2DFilter = dc.filters.RangedTwoDimensionalFilter(extent);
            dc.events.trigger(function () {
                _chart.filter(null);
                _chart.filter(ranged2DFilter);
                _chart.redrawGroup();
            }, dc.constants.EVENT_DELAY);

            resizeFiltered(ranged2DFilter);
        }
    };

    _chart.setBrushY = function (gBrush) {
        gBrush.call(_chart.brush().y(_chart.y()));
    };

    return _chart.anchor(parent, chartGroup);
};

/**
## Number Display Widget
Includes: [Base Mixin](#base-mixin)

A display of a single numeric value.

Examples:

* [Test Example](http://dc-js.github.io/dc.js/examples/number.html)
#### dc.numberDisplay(parent[, chartGroup])
Create a Number Display instance and attach it to the given parent element.

Unlike other charts, you do not need to set a dimension. Instead a group object must be provided and
a valueAccessor that returns a single value.

Parameters:

* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 The number display widget will only react to filter changes in the chart group.

Returns:
A newly created number display instance

```js
// create a number display under #chart-container1 element using the default global chart group
var display1 = dc.numberDisplay('#chart-container1');
```

**/
dc.numberDisplay = function (parent, chartGroup) {
    var SPAN_CLASS = 'number-display';
    var _formatNumber = d3.format('.2s');
    var _chart = dc.baseMixin({});
    var _html = {one:'', some:'', none:''};

    // dimension not required
    _chart._mandatoryAttributes(['group']);

    /**
    #### .html([object])
     Gets or sets an optional object specifying HTML templates to use depending on the number
     displayed.  The text `%number` will be replaced with the current value.
     - one: HTML template to use if the number is 1
     - zero: HTML template to use if the number is 0
     - some: HTML template to use otherwise

     ```js
     numberWidget.html({
         one:'%number record',
         some:'%number records',
         none:'no records'})
     ```
    **/

    _chart.html = function (s) {
        if (!arguments.length) {
            return _html;
        }
        if (s.none) {
            _html.none = s.none;//if none available
        } else if (s.one) {
            _html.none = s.one;//if none not available use one
        } else if (s.some) {
            _html.none = s.some;//if none and one not available use some
        }
        if (s.one) {
            _html.one = s.one;//if one available
        } else if (s.some) {
            _html.one = s.some;//if one not available use some
        }
        if (s.some) {
            _html.some = s.some;//if some available
        } else if (s.one) {
            _html.some = s.one;//if some not available use one
        }
        return _chart;
    };

    /**
    #### .value()
    Calculate and return the underlying value of the display
    **/

    _chart.value = function () {
        return _chart.data();
    };

    _chart.data(function (group) {
        var valObj = group.value ? group.value() : group.top(1)[0];
        return _chart.valueAccessor()(valObj);
    });

    _chart.transitionDuration(250); // good default

    _chart._doRender = function () {
        var newValue = _chart.value(),
            span = _chart.selectAll('.' + SPAN_CLASS);

        if (span.empty()) {
            span = span.data([0])
                .enter()
                .append('span')
                .attr('class', SPAN_CLASS);
        }

        span.transition()
            .duration(_chart.transitionDuration())
            .ease('quad-out-in')
            .tween('text', function () {
                var interp = d3.interpolateNumber(this.lastValue || 0, newValue);
                this.lastValue = newValue;
                return function (t) {
                    var html = null, num = _chart.formatNumber()(interp(t));
                    if (newValue === 0 && (_html.none !== '')) {
                        html = _html.none;
                    } else if (newValue === 1 && (_html.one !== '')) {
                        html = _html.one;
                    } else if (_html.some !== '') {
                        html = _html.some;
                    }
                    this.innerHTML = html ? html.replace('%number', num) : num;
                };
            });
    };

    _chart._doRedraw = function () {
        return _chart._doRender();
    };

    /**
    #### .formatNumber([formatter])
    Get or set a function to format the value for the display. By default `d3.format('.2s');` is used.

    **/
    _chart.formatNumber = function (_) {
        if (!arguments.length) {
            return _formatNumber;
        }
        _formatNumber = _;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

/**
 ## Heat Map

 Includes: [Color Mixin](#color-mixin), [Margin Mixin](#margin-mixin), [Base Mixin](#base-mixin)

 A heat map is matrix that represents the values of two dimensions of data using colors.

 #### dc.heatMap(parent[, chartGroup])
 Create a heat map instance and attach it to the given parent element.

 Parameters:
* parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) specifying
 a dom block element such as a div; or a dom element or d3 selection.

* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

 Returns:
 A newly created heat map instance

 ```js
 // create a heat map under #chart-container1 element using the default global chart group
 var heatMap1 = dc.heatMap('#chart-container1');
 // create a heat map under #chart-container2 element using chart group A
 var heatMap2 = dc.heatMap('#chart-container2', 'chartGroupA');
 ```

 **/
dc.heatMap = function (parent, chartGroup) {

    var DEFAULT_BORDER_RADIUS = 6.75;

    var _chartBody;

    var _cols;
    var _rows;
    var _xBorderRadius = DEFAULT_BORDER_RADIUS;
    var _yBorderRadius = DEFAULT_BORDER_RADIUS;

    var _chart = dc.colorMixin(dc.marginMixin(dc.baseMixin({})));
    _chart._mandatoryAttributes(['group']);
    _chart.title(_chart.colorAccessor());

    var _xAxisOnClick = function (d) { filterAxis(0, d); };
    var _yAxisOnClick = function (d) { filterAxis(1, d); };
    var _boxOnClick = function (d) {
        var filter = d.key;
        dc.events.trigger(function () {
            _chart.filter(filter);
            _chart.redrawGroup();
        });
    };

    function filterAxis(axis, value) {
        var cellsOnAxis = _chart.selectAll('.box-group').filter(function (d) {
            return d.key[axis] === value;
        });
        var unfilteredCellsOnAxis = cellsOnAxis.filter(function (d) {
            return !_chart.hasFilter(d.key);
        });
        dc.events.trigger(function () {
            if (unfilteredCellsOnAxis.empty()) {
                cellsOnAxis.each(function (d) {
                    _chart.filter(d.key);
                });
            } else {
                unfilteredCellsOnAxis.each(function (d) {
                    _chart.filter(d.key);
                });
            }
            _chart.redrawGroup();
        });
    }

    dc.override(_chart, 'filter', function (filter) {
        if (!arguments.length) {
            return _chart._filter();
        }

        return _chart._filter(dc.filters.TwoDimensionalFilter(filter));
    });

    function uniq(d, i, a) {
        return !i || a[i - 1] !== d;
    }

    /**
     #### .rows([values])
     Gets or sets the values used to create the rows of the heatmap, as an array. By default, all
     the values will be fetched from the data using the value accessor, and they will be sorted in
     ascending order.
     **/

    _chart.rows = function (_) {
        if (arguments.length) {
            _rows = _;
            return _chart;
        }
        if (_rows) {
            return _rows;
        }
        var rowValues = _chart.data().map(_chart.valueAccessor());
        rowValues.sort(d3.ascending);
        return d3.scale.ordinal().domain(rowValues.filter(uniq));
    };

    /**
     #### .cols([keys])
     Gets or sets the keys used to create the columns of the heatmap, as an array. By default, all
     the values will be fetched from the data using the key accessor, and they will be sorted in
     ascending order.
     **/
    _chart.cols = function (_) {
        if (arguments.length) {
            _cols = _;
            return _chart;
        }
        if (_cols) {
            return _cols;
        }
        var colValues = _chart.data().map(_chart.keyAccessor());
        colValues.sort(d3.ascending);
        return d3.scale.ordinal().domain(colValues.filter(uniq));
    };

    _chart._doRender = function () {
        _chart.resetSvg();

        _chartBody = _chart.svg()
            .append('g')
            .attr('class', 'heatmap')
            .attr('transform', 'translate(' + _chart.margins().left + ',' + _chart.margins().top + ')');

        return _chart._doRedraw();
    };

    _chart._doRedraw = function () {
        var rows = _chart.rows(),
            cols = _chart.cols(),
            rowCount = rows.domain().length,
            colCount = cols.domain().length,
            boxWidth = Math.floor(_chart.effectiveWidth() / colCount),
            boxHeight = Math.floor(_chart.effectiveHeight() / rowCount);

        cols.rangeRoundBands([0, _chart.effectiveWidth()]);
        rows.rangeRoundBands([_chart.effectiveHeight(), 0]);

        var boxes = _chartBody.selectAll('g.box-group').data(_chart.data(), function (d, i) {
            return _chart.keyAccessor()(d, i) + '\0' + _chart.valueAccessor()(d, i);
        });
        var gEnter = boxes.enter().append('g')
            .attr('class', 'box-group');

        gEnter.append('rect')
            .attr('class', 'heat-box')
            .attr('fill', 'white')
            .on('click', _chart.boxOnClick());

        if (_chart.renderTitle()) {
            gEnter.append('title')
                .text(_chart.title());
        }

        dc.transition(boxes.selectAll('rect'), _chart.transitionDuration())
            .attr('x', function (d, i) { return cols(_chart.keyAccessor()(d, i)); })
            .attr('y', function (d, i) { return rows(_chart.valueAccessor()(d, i)); })
            .attr('rx', _xBorderRadius)
            .attr('ry', _yBorderRadius)
            .attr('fill', _chart.getColor)
            .attr('width', boxWidth)
            .attr('height', boxHeight);

        boxes.exit().remove();

        var gCols = _chartBody.selectAll('g.cols');
        if (gCols.empty()) {
            gCols = _chartBody.append('g').attr('class', 'cols axis');
        }
        var gColsText = gCols.selectAll('text').data(cols.domain());
        gColsText.enter().append('text')
              .attr('x', function (d) { return cols(d) + boxWidth / 2; })
              .style('text-anchor', 'middle')
              .attr('y', _chart.effectiveHeight())
              .attr('dy', 12)
              .on('click', _chart.xAxisOnClick())
              .text(function (d) { return d; });
        dc.transition(gColsText, _chart.transitionDuration())
               .text(function (d) { return d; })
               .attr('x', function (d) { return cols(d) + boxWidth / 2; });
        gColsText.exit().remove();
        var gRows = _chartBody.selectAll('g.rows');
        if (gRows.empty()) {
            gRows = _chartBody.append('g').attr('class', 'rows axis');
        }
        var gRowsText = gRows.selectAll('text').data(rows.domain());
        gRowsText.enter().append('text')
              .attr('dy', 6)
              .style('text-anchor', 'end')
              .attr('x', 0)
              .attr('dx', -2)
              .on('click', _chart.yAxisOnClick())
              .text(function (d) { return d; });
        dc.transition(gRowsText, _chart.transitionDuration())
              .text(function (d) { return d; })
              .attr('y', function (d) { return rows(d) + boxHeight / 2; });
        gRowsText.exit().remove();

        if (_chart.hasFilter()) {
            _chart.selectAll('g.box-group').each(function (d) {
                if (_chart.isSelectedNode(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.selectAll('g.box-group').each(function () {
                _chart.resetHighlight(this);
            });
        }
        return _chart;
    };
    /**
     #### .boxOnClick([handler])
     Gets or sets the handler that fires when an individual cell is clicked in the heatmap.
     By default, filtering of the cell will be toggled.
     **/
    _chart.boxOnClick = function (f) {
        if (!arguments.length) {
            return _boxOnClick;
        }
        _boxOnClick = f;
        return _chart;
    };

    /**
     #### .xAxisOnClick([handler])
     Gets or sets the handler that fires when a column tick is clicked in the x axis.
     By default, if any cells in the column are unselected, the whole column will be selected,
     otherwise the whole column will be unselected.
     **/
    _chart.xAxisOnClick = function (f) {
        if (!arguments.length) {
            return _xAxisOnClick;
        }
        _xAxisOnClick = f;
        return _chart;
    };

    /**
     #### .yAxisOnClick([handler])
     Gets or sets the handler that fires when a row tick is clicked in the y axis.
     By default, if any cells in the row are unselected, the whole row will be selected,
     otherwise the whole row will be unselected.
     **/
    _chart.yAxisOnClick = function (f) {
        if (!arguments.length) {
            return _yAxisOnClick;
        }
        _yAxisOnClick = f;
        return _chart;
    };

    /**
     #### .xBorderRadius([value])
     Gets or sets the X border radius.  Set to 0 to get full rectangles.  Default: 6.75
     */
    _chart.xBorderRadius = function (d) {
        if (!arguments.length) {
            return _xBorderRadius;
        }
        _xBorderRadius = d;
        return _chart;
    };

    /**
     #### .xBorderRadius([value])
     Gets or sets the Y border radius.  Set to 0 to get full rectangles.  Default: 6.75
     */
    _chart.yBorderRadius = function (d) {
        if (!arguments.length) {
            return _yBorderRadius;
        }
        _yBorderRadius = d;
        return _chart;
    };

    _chart.isSelectedNode = function (d) {
        return _chart.hasFilter(d.key);
    };

    return _chart.anchor(parent, chartGroup);
};

// https://github.com/d3/d3-plugins/blob/master/box/box.js
(function () {

    // Inspired by http://informationandvisualization.de/blog/box-plot
    d3.box = function () {
        var width = 1,
            height = 1,
            duration = 0,
            domain = null,
            value = Number,
            whiskers = boxWhiskers,
            quartiles = boxQuartiles,
            tickFormat = null;

        // For each small multiple…
        function box(g) {
            g.each(function (d, i) {
                d = d.map(value).sort(d3.ascending);
                var g = d3.select(this),
                    n = d.length,
                    min = d[0],
                    max = d[n - 1];

                // Compute quartiles. Must return exactly 3 elements.
                var quartileData = d.quartiles = quartiles(d);

                // Compute whiskers. Must return exactly 2 elements, or null.
                var whiskerIndices = whiskers && whiskers.call(this, d, i),
                    whiskerData = whiskerIndices && whiskerIndices.map(function (i) { return d[i]; });

                // Compute outliers. If no whiskers are specified, all data are 'outliers'.
                // We compute the outliers as indices, so that we can join across transitions!
                var outlierIndices = whiskerIndices ?
                    d3.range(0, whiskerIndices[0]).concat(d3.range(whiskerIndices[1] + 1, n)) : d3.range(n);

                // Compute the new x-scale.
                var x1 = d3.scale.linear()
                    .domain(domain && domain.call(this, d, i) || [min, max])
                    .range([height, 0]);

                // Retrieve the old x-scale, if this is an update.
                var x0 = this.__chart__ || d3.scale.linear()
                    .domain([0, Infinity])
                    .range(x1.range());

                // Stash the new scale.
                this.__chart__ = x1;

                // Note: the box, median, and box tick elements are fixed in number,
                // so we only have to handle enter and update. In contrast, the outliers
                // and other elements are variable, so we need to exit them! Variable
                // elements also fade in and out.

                // Update center line: the vertical line spanning the whiskers.
                var center = g.selectAll('line.center')
                    .data(whiskerData ? [whiskerData] : []);

                center.enter().insert('line', 'rect')
                    .attr('class', 'center')
                    .attr('x1', width / 2)
                    .attr('y1', function (d) { return x0(d[0]); })
                    .attr('x2', width / 2)
                    .attr('y2', function (d) { return x0(d[1]); })
                    .style('opacity', 1e-6)
                  .transition()
                    .duration(duration)
                    .style('opacity', 1)
                    .attr('y1', function (d) { return x1(d[0]); })
                    .attr('y2', function (d) { return x1(d[1]); });

                center.transition()
                    .duration(duration)
                    .style('opacity', 1)
                    .attr('y1', function (d) { return x1(d[0]); })
                    .attr('y2', function (d) { return x1(d[1]); });

                center.exit().transition()
                    .duration(duration)
                    .style('opacity', 1e-6)
                    .attr('y1', function (d) { return x1(d[0]); })
                    .attr('y2', function (d) { return x1(d[1]); })
                    .remove();

                // Update innerquartile box.
                var box = g.selectAll('rect.box')
                    .data([quartileData]);

                box.enter().append('rect')
                    .attr('class', 'box')
                    .attr('x', 0)
                    .attr('y', function (d) { return x0(d[2]); })
                    .attr('width', width)
                    .attr('height', function (d) { return x0(d[0]) - x0(d[2]); })
                  .transition()
                    .duration(duration)
                    .attr('y', function (d) { return x1(d[2]); })
                    .attr('height', function (d) { return x1(d[0]) - x1(d[2]); });

                box.transition()
                    .duration(duration)
                    .attr('y', function (d) { return x1(d[2]); })
                    .attr('height', function (d) { return x1(d[0]) - x1(d[2]); });

                // Update median line.
                var medianLine = g.selectAll('line.median')
                    .data([quartileData[1]]);

                medianLine.enter().append('line')
                    .attr('class', 'median')
                    .attr('x1', 0)
                    .attr('y1', x0)
                    .attr('x2', width)
                    .attr('y2', x0)
                    .transition()
                    .duration(duration)
                    .attr('y1', x1)
                    .attr('y2', x1);

                medianLine.transition()
                    .duration(duration)
                    .attr('y1', x1)
                    .attr('y2', x1);

                // Update whiskers.
                var whisker = g.selectAll('line.whisker')
                    .data(whiskerData || []);

                whisker.enter().insert('line', 'circle, text')
                    .attr('class', 'whisker')
                    .attr('x1', 0)
                    .attr('y1', x0)
                    .attr('x2', width)
                    .attr('y2', x0)
                    .style('opacity', 1e-6)
                  .transition()
                    .duration(duration)
                    .attr('y1', x1)
                    .attr('y2', x1)
                    .style('opacity', 1);

                whisker.transition()
                    .duration(duration)
                    .attr('y1', x1)
                    .attr('y2', x1)
                    .style('opacity', 1);

                whisker.exit().transition()
                    .duration(duration)
                    .attr('y1', x1)
                    .attr('y2', x1)
                    .style('opacity', 1e-6)
                    .remove();

                // Update outliers.
                var outlier = g.selectAll('circle.outlier')
                    .data(outlierIndices, Number);

                outlier.enter().insert('circle', 'text')
                    .attr('class', 'outlier')
                    .attr('r', 5)
                    .attr('cx', width / 2)
                    .attr('cy', function (i) { return x0(d[i]); })
                    .style('opacity', 1e-6)
                    .transition()
                    .duration(duration)
                    .attr('cy', function (i) { return x1(d[i]); })
                    .style('opacity', 1);

                outlier.transition()
                    .duration(duration)
                    .attr('cy', function (i) { return x1(d[i]); })
                    .style('opacity', 1);

                outlier.exit().transition()
                    .duration(duration)
                    .attr('cy', function (i) { return x1(d[i]); })
                    .style('opacity', 1e-6)
                    .remove();

                // Compute the tick format.
                var format = tickFormat || x1.tickFormat(8);

                // Update box ticks.
                var boxTick = g.selectAll('text.box')
                    .data(quartileData);

                boxTick.enter().append('text')
                    .attr('class', 'box')
                    .attr('dy', '.3em')
                    .attr('dx', function (d, i) { return i & 1 ? 6 : -6; })
                    .attr('x', function (d, i) { return i & 1 ? width : 0; })
                    .attr('y', x0)
                    .attr('text-anchor', function (d, i) { return i & 1 ? 'start' : 'end'; })
                    .text(format)
                    .transition()
                    .duration(duration)
                    .attr('y', x1);

                boxTick.transition()
                    .duration(duration)
                    .text(format)
                    .attr('y', x1);

                // Update whisker ticks. These are handled separately from the box
                // ticks because they may or may not exist, and we want don't want
                // to join box ticks pre-transition with whisker ticks post-.
                var whiskerTick = g.selectAll('text.whisker')
                    .data(whiskerData || []);

                whiskerTick.enter().append('text')
                    .attr('class', 'whisker')
                    .attr('dy', '.3em')
                    .attr('dx', 6)
                    .attr('x', width)
                    .attr('y', x0)
                    .text(format)
                    .style('opacity', 1e-6)
                    .transition()
                    .duration(duration)
                    .attr('y', x1)
                    .style('opacity', 1);

                whiskerTick.transition()
                    .duration(duration)
                    .text(format)
                    .attr('y', x1)
                    .style('opacity', 1);

                whiskerTick.exit().transition()
                    .duration(duration)
                    .attr('y', x1)
                    .style('opacity', 1e-6)
                    .remove();
            });
            d3.timer.flush();
        }

        box.width = function (x) {
            if (!arguments.length) {
                return width;
            }
            width = x;
            return box;
        };

        box.height = function (x) {
            if (!arguments.length) {
                return height;
            }
            height = x;
            return box;
        };

        box.tickFormat = function (x) {
            if (!arguments.length) {
                return tickFormat;
            }
            tickFormat = x;
            return box;
        };

        box.duration = function (x) {
            if (!arguments.length) {
                return duration;
            }
            duration = x;
            return box;
        };

        box.domain = function (x) {
            if (!arguments.length) {
                return domain;
            }
            domain = x === null ? x : d3.functor(x);
            return box;
        };

        box.value = function (x) {
            if (!arguments.length) {
                return value;
            }
            value = x;
            return box;
        };

        box.whiskers = function (x) {
            if (!arguments.length) {
                return whiskers;
            }
            whiskers = x;
            return box;
        };

        box.quartiles = function (x) {
            if (!arguments.length) {
                return quartiles;
            }
            quartiles = x;
            return box;
        };

        return box;
    };

    function boxWhiskers(d) {
        return [0, d.length - 1];
    }

    function boxQuartiles(d) {
        return [
            d3.quantile(d, 0.25),
            d3.quantile(d, 0.5),
            d3.quantile(d, 0.75)
        ];
    }

})();

/**
 ## Box Plot

 Includes: [Coordinate Grid Mixin](#coordinate-grid-mixin)

 A box plot is a chart that depicts numerical data via their quartile ranges.

 #### dc.boxPlot(parent[, chartGroup])
 Create a box plot instance and attach it to the given parent element.

 Parameters:
 * parent : string | node | selection - any valid
 [d3 single selector](https://github.com/mbostock/d3/wiki/Selections#selecting-elements) representing
 a dom block element such as a div; or a dom element or d3 selection.
* chartGroup : string (optional) - name of the chart group this chart instance should be placed in.
 Interaction with a chart will only trigger events and redraws within the chart's group.

 Returns:
 A newly created box plot instance

 ```js
 // create a box plot under #chart-container1 element using the default global chart group
 var boxPlot1 = dc.boxPlot('#chart-container1');
 // create a box plot under #chart-container2 element using chart group A
 var boxPlot2 = dc.boxPlot('#chart-container2', 'chartGroupA');
 ```

 **/
dc.boxPlot = function (parent, chartGroup) {
    var _chart = dc.coordinateGridMixin({});

    // Returns a function to compute the interquartile range.
    function DEFAULT_WHISKERS_IQR (k) {
        return function (d) {
            var q1 = d.quartiles[0],
                q3 = d.quartiles[2],
                iqr = (q3 - q1) * k,
                i = -1,
                j = d.length;
            /*jshint -W116*/
            /*jshint -W035*/
            while (d[++i] < q1 - iqr) {}
            while (d[--j] > q3 + iqr) {}
            /*jshint +W116*/
            return [i, j];
            /*jshint +W035*/
        };
    }

    var _whiskerIqrFactor = 1.5;
    var _whiskersIqr = DEFAULT_WHISKERS_IQR;
    var _whiskers = _whiskersIqr(_whiskerIqrFactor);

    var _box = d3.box();
    var _tickFormat = null;

    var _boxWidth = function (innerChartWidth, xUnits) {
        if (_chart.isOrdinal()) {
            return _chart.x().rangeBand();
        } else {
            return innerChartWidth / (1 + _chart.boxPadding()) / xUnits;
        }
    };

    // default padding to handle min/max whisker text
    _chart.yAxisPadding(12);

    // default to ordinal
    _chart.x(d3.scale.ordinal());
    _chart.xUnits(dc.units.ordinal);

    // valueAccessor should return an array of values that can be coerced into numbers
    // or if data is overloaded for a static array of arrays, it should be `Number`.
    // Empty arrays are not included.
    _chart.data(function (group) {
        return group.all().map(function (d) {
            d.map = function (accessor) { return accessor.call(d, d); };
            return d;
        }).filter(function (d) {
            var values = _chart.valueAccessor()(d);
            return values.length !== 0;
        });
    });

    /**
    #### .boxPadding([padding])
    Get or set the spacing between boxes as a fraction of box size. Valid values are within 0-1.
    See the [d3 docs](https://github.com/mbostock/d3/wiki/Ordinal-Scales#wiki-ordinal_rangeBands)
    for a visual description of how the padding is applied.

    Default: 0.8
    **/
    _chart.boxPadding = _chart._rangeBandPadding;
    _chart.boxPadding(0.8);

    /**
    #### .outerPadding([padding])
    Get or set the outer padding on an ordinal box chart. This setting has no effect on non-ordinal charts
    or on charts with a custom `.boxWidth`. Will pad the width by `padding * barWidth` on each side of the chart.

    Default: 0.5
    **/
    _chart.outerPadding = _chart._outerRangeBandPadding;
    _chart.outerPadding(0.5);

    /**
     #### .boxWidth(width || function(innerChartWidth, xUnits) { ... })
     Get or set the numerical width of the boxplot box. The width may also be a function taking as
     parameters the chart width excluding the right and left margins, as well as the number of x
     units.
     **/
    _chart.boxWidth = function (_) {
        if (!arguments.length) {
            return _boxWidth;
        }
        _boxWidth = d3.functor(_);
        return _chart;
    };

    var boxTransform = function (d, i) {
        var xOffset = _chart.x()(_chart.keyAccessor()(d, i));
        return 'translate(' + xOffset + ', 0)';
    };

    _chart._preprocessData = function () {
        if (_chart.elasticX()) {
            _chart.x().domain([]);
        }
    };

    _chart.plotData = function () {
        var _calculatedBoxWidth = _boxWidth(_chart.effectiveWidth(), _chart.xUnitCount());

        _box.whiskers(_whiskers)
            .width(_calculatedBoxWidth)
            .height(_chart.effectiveHeight())
            .value(_chart.valueAccessor())
            .domain(_chart.y().domain())
            .duration(_chart.transitionDuration())
            .tickFormat(_tickFormat);

        var boxesG = _chart.chartBodyG().selectAll('g.box').data(_chart.data(), function (d) { return d.key; });

        renderBoxes(boxesG);
        updateBoxes(boxesG);
        removeBoxes(boxesG);

        _chart.fadeDeselectedArea();
    };

    function renderBoxes(boxesG) {
        var boxesGEnter = boxesG.enter().append('g');

        boxesGEnter
            .attr('class', 'box')
            .attr('transform', boxTransform)
            .call(_box)
            .on('click', function (d) {
                _chart.filter(d.key);
                _chart.redrawGroup();
            });
    }

    function updateBoxes(boxesG) {
        dc.transition(boxesG, _chart.transitionDuration())
            .attr('transform', boxTransform)
            .call(_box)
            .each(function () {
                d3.select(this).select('rect.box').attr('fill', _chart.getColor);
            });
    }

    function removeBoxes(boxesG) {
        boxesG.exit().remove().call(_box);
    }

    _chart.fadeDeselectedArea = function () {
        if (_chart.hasFilter()) {
            _chart.g().selectAll('g.box').each(function (d) {
                if (_chart.isSelectedNode(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.g().selectAll('g.box').each(function () {
                _chart.resetHighlight(this);
            });
        }
    };

    _chart.isSelectedNode = function (d) {
        return _chart.hasFilter(d.key);
    };

    _chart.yAxisMin = function () {
        var min = d3.min(_chart.data(), function (e) {
            return d3.min(_chart.valueAccessor()(e));
        });
        return dc.utils.subtract(min, _chart.yAxisPadding());
    };

    _chart.yAxisMax = function () {
        var max = d3.max(_chart.data(), function (e) {
            return d3.max(_chart.valueAccessor()(e));
        });
        return dc.utils.add(max, _chart.yAxisPadding());
    };

    /**
     #### .tickFormat()
     Set the numerical format of the boxplot median, whiskers and quartile labels. Defaults to
     integer formatting.
     ```js
     // format ticks to 2 decimal places
     chart.tickFormat(d3.format('.2f'));
     ```
     **/
    _chart.tickFormat = function (x) {
        if (!arguments.length) {
            return _tickFormat;
        }
        _tickFormat = x;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
};

// Renamed functions

dc.abstractBubbleChart = dc.bubbleMixin;
dc.baseChart = dc.baseMixin;
dc.capped = dc.capMixin;
dc.colorChart = dc.colorMixin;
dc.coordinateGridChart = dc.coordinateGridMixin;
dc.marginable = dc.marginMixin;
dc.stackableChart = dc.stackMixin;

// Expose d3 and crossfilter, so that clients in browserify
// case can obtain them if they need them.
dc.d3 = d3;
dc.crossfilter = crossfilter;

return dc;}
    if(typeof define === "function" && define.amd) {
        define(["d3", "crossfilter"], _dc);
    } else if(typeof module === "object" && module.exports) {
        var _d3 = require('d3');
        var _crossfilter = require('crossfilter');
        // When using npm + browserify, 'crossfilter' is a function,
        // since package.json specifies index.js as main function, and it
        // does special handling. When using bower + browserify,
        // there's no main in bower.json (in fact, there's no bower.json),
        // so we need to fix it.
        if (typeof _crossfilter !== "function") {
            _crossfilter = _crossfilter.crossfilter;
        }
        module.exports = _dc(_d3, _crossfilter);
    } else {
        this.dc = _dc(d3, crossfilter);
    }
}
)();
</script>

<script type="text/javascript">

// ### Create Chart Objects
// Create chart objects assocated with the container elements identified by the css selector.
// Note: It is often a good idea to have these objects accessible at the global scope so that they can be modified or
// filtered by other page controls.
var ringCountChart   = dc.barChart("#chart-bar-ring"),
    pdbCountChart  = dc.rowChart("#chart-row-pdb");

//### Load your data
//Data can be loaded through regular means with your
//favorite javascript library
//
//```javascript
//d3.csv('data.csv', function(data) {...};
//d3.json('data.json', function(data) {...};
//jQuery.getJson('data.json', function(data){...});
//```
//d3.json('pucker_table2.json', function(error,data) {

var data = [
        {
            "contextconformer": "C4A|C|C1A",
            "resname": "CTR",
            "resid": 211,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-35.39",
                "-38.18",
                "-30.29"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3A",
                "C4A",
                "C5A",
                "O5A",
                "C1A",
                "C2A"
            ]
        },
        {
            "contextconformer": "C4B|C|C1B",
            "resname": "CTR",
            "resid": 211,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-36.82",
                "-37.04",
                "-29.22"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3B",
                "C4B",
                "C5B",
                "O5B",
                "C1B",
                "C2B"
            ]
        },
        {
            "contextconformer": "C4C|C|C1C",
            "resname": "CTR",
            "resid": 211,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-31.42",
                "-41.33",
                "-32.69"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3C",
                "C4C",
                "C5C",
                "O5C",
                "C1C",
                "C2C"
            ]
        },
        {
            "contextconformer": "C4A|C|C1A",
            "resname": "CTR",
            "resid": 212,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-33.97",
                "-37.84",
                "-32.04"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3A",
                "C4A",
                "C5A",
                "O5A",
                "C1A",
                "C2A"
            ]
        },
        {
            "contextconformer": "C4B|C|C1B",
            "resname": "CTR",
            "resid": 212,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-23.66",
                "-39.91",
                "-37.59"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3B",
                "C4B",
                "C5B",
                "O5B",
                "C1B",
                "C2B"
            ]
        },
        {
            "contextconformer": "C2C|H|C1C",
            "resname": "CTR",
            "resid": 212,
            "chain": "A",
            "pdbid": "example-pdb-4ENG",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-27.59",
                "-47.95",
                "-31.47"
            ],
            "conformer": "2H1",
            "ringorder": [
                "C3C",
                "C4C",
                "C5C",
                "O5C",
                "C1C",
                "C2C"
            ]
        },
        {
            "contextconformer": "C46|E|",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "4E",
            "puckercoords": [
                "-49.01",
                "43.18",
                "-58.10"
            ],
            "conformer": "4E",
            "ringorder": [
                "C36",
                "C46",
                "C56",
                "O56",
                "C16",
                "C26"
            ]
        },
        {
            "contextconformer": "C15C45|B|",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "14B",
            "puckercoords": [
                "-49.88",
                "60.71",
                "-25.47"
            ],
            "conformer": "14B",
            "ringorder": [
                "C35",
                "C45",
                "C55",
                "O55",
                "C15",
                "C25"
            ]
        },
        {
            "contextconformer": "C14|S|C54",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "1S5",
            "puckercoords": [
                "-55.88",
                "47.15",
                "-31.89"
            ],
            "conformer": "1S5",
            "ringorder": [
                "C34",
                "C44",
                "C54",
                "O54",
                "C14",
                "C24"
            ]
        },
        {
            "contextconformer": "C13|S|C33",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "1S3",
            "puckercoords": [
                "-12.03",
                "67.62",
                "-53.26"
            ],
            "conformer": "1S3",
            "ringorder": [
                "C33",
                "C43",
                "C53",
                "O53",
                "C13",
                "C23"
            ]
        },
        {
            "contextconformer": "C12|S|C52",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "1S5",
            "puckercoords": [
                "-64.39",
                "43.65",
                "-5.11"
            ],
            "conformer": "1S5",
            "ringorder": [
                "C32",
                "C42",
                "C52",
                "O52",
                "C12",
                "C22"
            ]
        },
        {
            "contextconformer": "C47|C|C17",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-30.55",
                "-33.09",
                "-47.08"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C37",
                "C47",
                "C57",
                "O57",
                "C17",
                "C27"
            ]
        },
        {
            "contextconformer": "C41|H|C51",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-55.66",
                "-17.72",
                "-25.25"
            ],
            "conformer": "4H5",
            "ringorder": [
                "C31",
                "C41",
                "C51",
                "O51",
                "C11",
                "C21"
            ]
        },
        {
            "contextconformer": "TS3",
            "resname": "BCD",
            "resid": 1403,
            "chain": "A",
            "pdbid": "bcd.pdb",
            "ringsize": 7,
            "origconformer": "TS3",
            "puckercoords": [
                "14.00",
                "-12.28",
                "4.84",
                "15.42"
            ],
            "conformer": "TS3",
            "ringorder": [
                "C11C21C31C41C51O51",
                "C12C22C32C42C52O52",
                "C13C23C33C43C53O53",
                "C14C24C34C44C54O54",
                "C15C25C35C45C55O55",
                "C16C26C36C46C56O56",
                "C17C27C37C47C57O57"
            ]
        },
        {
            "contextconformer": "C4'|C|C1'",
            "resname": "MAL",
            "resid": 687,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-36.73",
                "-32.29",
                "-29.30"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3'",
                "C4'",
                "C5'",
                "O5'",
                "C1'",
                "C2'"
            ]
        },
        {
            "contextconformer": "C4|C|C1",
            "resname": "MAL",
            "resid": 687,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-32.33",
                "-31.02",
                "-30.31"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3",
                "C4",
                "C5",
                "O5",
                "C1",
                "C2"
            ]
        },
        {
            "contextconformer": "C2D|H|C3D",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-21.97",
                "-31.68",
                "-34.65"
            ],
            "conformer": "2H3",
            "ringorder": [
                "C3D",
                "C4D",
                "C5D",
                "O5D",
                "C1D",
                "C2D"
            ]
        },
        {
            "contextconformer": "C2E|H|C3E",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-17.75",
                "-34.68",
                "-37.57"
            ],
            "conformer": "2H3",
            "ringorder": [
                "C3E",
                "C4E",
                "C5E",
                "O5E",
                "C1E",
                "C2E"
            ]
        },
        {
            "contextconformer": "C4B|C|C1B",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-34.55",
                "-37.81",
                "-29.07"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3B",
                "C4B",
                "C5B",
                "O5B",
                "C1B",
                "C2B"
            ]
        },
        {
            "contextconformer": "C4A|C|C1A",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-35.62",
                "-28.65",
                "-33.39"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3A",
                "C4A",
                "C5A",
                "O5A",
                "C1A",
                "C2A"
            ]
        },
        {
            "contextconformer": "C4C|C|C1C",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-26.33",
                "-39.11",
                "-29.79"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3C",
                "C4C",
                "C5C",
                "O5C",
                "C1C",
                "C2C"
            ]
        },
        {
            "contextconformer": "C2F|H|C1F",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-23.27",
                "-39.92",
                "-32.61"
            ],
            "conformer": "2H1",
            "ringorder": [
                "C3F",
                "C4F",
                "C5F",
                "O5F",
                "C1F",
                "C2F"
            ]
        },
        {
            "contextconformer": "|P|",
            "resname": "ACX",
            "resid": 688,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "P",
            "puckercoords": [
                "-1.21",
                "0.16",
                "9.59"
            ],
            "conformer": "P",
            "ringorder": [
                "C1AC2AC3AC4AC5AO5A",
                "C1BC2BC3BC4BC5BO5B",
                "C1CC2CC3CC4CC5CO5C",
                "C1DC2DC3DC4DC5DO5D",
                "C1EC2EC3EC4EC5EO5E",
                "C1FC2FC3FC4FC5FO5F"
            ]
        },
        {
            "contextconformer": "C4D|C|C1D",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-28.16",
                "-33.78",
                "-36.69"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3D",
                "C4D",
                "C5D",
                "O5D",
                "C1D",
                "C2D"
            ]
        },
        {
            "contextconformer": "C4E|C|C1E",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-30.39",
                "-39.03",
                "-31.50"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3E",
                "C4E",
                "C5E",
                "O5E",
                "C1E",
                "C2E"
            ]
        },
        {
            "contextconformer": "O5B|H|C1B",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-30.40",
                "-41.45",
                "-24.24"
            ],
            "conformer": "6H1",
            "ringorder": [
                "C3B",
                "C4B",
                "C5B",
                "O5B",
                "C1B",
                "C2B"
            ]
        },
        {
            "contextconformer": "C2A|H|C1A",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-21.99",
                "-38.95",
                "-30.36"
            ],
            "conformer": "2H1",
            "ringorder": [
                "C3A",
                "C4A",
                "C5A",
                "O5A",
                "C1A",
                "C2A"
            ]
        },
        {
            "contextconformer": "C4C|C|C1C",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-26.53",
                "-42.79",
                "-33.89"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3C",
                "C4C",
                "C5C",
                "O5C",
                "C1C",
                "C2C"
            ]
        },
        {
            "contextconformer": "C2F|H|C1F",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-21.92",
                "-42.21",
                "-25.15"
            ],
            "conformer": "2H1",
            "ringorder": [
                "C3F",
                "C4F",
                "C5F",
                "O5F",
                "C1F",
                "C2F"
            ]
        },
        {
            "contextconformer": "|P|",
            "resname": "ACX",
            "resid": 689,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "P",
            "puckercoords": [
                "6.61",
                "-6.67",
                "13.64"
            ],
            "conformer": "P",
            "ringorder": [
                "C1AC2AC3AC4AC5AO5A",
                "C1BC2BC3BC4BC5BO5B",
                "C1CC2CC3CC4CC5CO5C",
                "C1DC2DC3DC4DC5DO5D",
                "C1EC2EC3EC4EC5EO5E",
                "C1FC2FC3FC4FC5FO5F"
            ]
        },
        {
            "contextconformer": "C2|H|C3",
            "resname": "GLC",
            "resid": 692,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-21.92",
                "-23.11",
                "-39.86"
            ],
            "conformer": "2H3",
            "ringorder": [
                "C3",
                "C4",
                "C5",
                "O5",
                "C1",
                "C2"
            ]
        },
        {
            "contextconformer": "C2|H|C3",
            "resname": "GLC",
            "resid": 693,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-23.21",
                "-27.35",
                "-45.33"
            ],
            "conformer": "2H3",
            "ringorder": [
                "C3",
                "C4",
                "C5",
                "O5",
                "C1",
                "C2"
            ]
        },
        {
            "contextconformer": "C4|H|C5",
            "resname": "GLC",
            "resid": 694,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-35.13",
                "-19.34",
                "-33.50"
            ],
            "conformer": "4H5",
            "ringorder": [
                "C3",
                "C4",
                "C5",
                "O5",
                "C1",
                "C2"
            ]
        },
        {
            "contextconformer": "C4|C|C1",
            "resname": "GLC",
            "resid": 695,
            "chain": "A",
            "pdbid": "1CXF.pdb",
            "ringsize": 6,
            "origconformer": "4C1",
            "puckercoords": [
                "-35.92",
                "-25.59",
                "-39.09"
            ],
            "conformer": "4C1",
            "ringorder": [
                "C3",
                "C4",
                "C5",
                "O5",
                "C1",
                "C2"
            ]
        }
]

console.log('data :' + data);
//  data.forEach(function(d) {
//    d.pdbid     =  d.pdbid;
//    d.resname  = d.resname;
//    d.conformer  =  d.conformer;
//
//  });
    //### Create Crossfilter Dimensions and Groups
    //See the [crossfilter API](https://github.com/square/crossfilter/wiki/API-Reference) for reference.
    var ndx = crossfilter(data);
    //var all = ndx.groupAll();


    // dimension by ring
    var ringDim = ndx.dimension(function (d) {
        return d.ringsize;
    });
    // dimension by pdb
    var pdbDim = ndx.dimension(function (d) {
        return d.pdbid;
    });


//    countperPDB = pdbDim.group().reduceSum(function(d) {return +d.Spent;}),
//    countperRes = resnameDim.group().reduceSum(function(d) {return +d.Spent;}),
//    countperPDB = pdbDim.group().reduceSum(function(d) {return d.ringsize;}),
//    countperRes = resnameDim.group().reduceSum(function(d) {return d.ringsize;});
    countperRing    = ringDim.group().reduceCount(),
    countperPDB    = pdbDim.group().reduceCount(),
    //countperPDB = pdbDim.group().reduceSum(function(d) {return d.ringsize;});

    //### Define Chart Attributes
    //Define chart attributes using fluent methods. See the
    // [dc API Reference](https://github.com/dc-js/dc.js/blob/master/web/docs/api-latest.md) for more information
    //

ringCountChart
    .width(350).height(200)
    .dimension(ringDim)
    .group(countperRing)
    .x(d3.scale.linear().domain([0,10]))
    .elasticY(true);
ringCountChart.xAxis().tickFormat(function(d) {return d}); // convert back to base unit
ringCountChart.yAxis().ticks(2);


pdbCountChart
    .width(350).height(200)
    .dimension(pdbDim)
    .group(countperPDB)
    .elasticX(true);


dc.renderAll();
//}); // END d3 json data load

</script>

</body>
</html>
"""
        out.write(output)

    except Exception as e:
        raise e
    finally:
        out.close()
author	chrisb
date	Fri, 06 May 2016 08:05:48 -0400
parents	89592faa2875
children