--- a/histogram.r	Mon Apr 07 19:24:08 2014 -0400
+++ b/histogram.r	Mon Apr 07 19:24:19 2014 -0400
@@ -10,12 +10,19 @@
         column_data <- sapply( table[column], as.numeric )
 
         # create hist data
-        hist_data <- hist(column_data, plot=FALSE)#, breaks=seq(by=options$bin_size))
+        hist_data <- hist(column_data, plot=FALSE)
 
         # collect vectors in list
         l <- append(l, list(hist_data$breaks[2: length(hist_data$breaks)]))
         l <- append(l, list(hist_data$density))
     }
+    
+    # make sure length is fine
+    n <- max(sapply(l, length))
+    ll <- lapply(l, function(X) {
+        c(as.character(X), rep("", times = n - length(X)))
+    })
+    l <- do.call(cbind, ll)
 
     # return
     return (l)