annotate SMART/Java/Python/misc/Utils.py @ 60:90f4b29d884f

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author m-zytnicki
date Fri, 21 Feb 2014 08:32:36 -0500
parents 769e306b7933
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1 #
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2 # Copyright INRA-URGI 2009-2010
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3 #
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4 # This software is governed by the CeCILL license under French law and
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5 # abiding by the rules of distribution of free software. You can use,
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6 # modify and/ or redistribute the software under the terms of the CeCILL
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7 # license as circulated by CEA, CNRS and INRIA at the following URL
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8 # "http://www.cecill.info".
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9 #
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10 # As a counterpart to the access to the source code and rights to copy,
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11 # modify and redistribute granted by the license, users are provided only
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12 # with a limited warranty and the software's author, the holder of the
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13 # economic rights, and the successive licensors have only limited
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14 # liability.
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15 #
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16 # In this respect, the user's attention is drawn to the risks associated
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17 # with loading, using, modifying and/or developing or reproducing the
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18 # software by the user in light of its specific status of free software,
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19 # that may mean that it is complicated to manipulate, and that also
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20 # therefore means that it is reserved for developers and experienced
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21 # professionals having in-depth computer knowledge. Users are therefore
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22 # encouraged to load and test the software's suitability as regards their
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23 # requirements in conditions enabling the security of their systems and/or
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24 # data to be ensured and, more generally, to use and operate it in the
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25 # same conditions as regards security.
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26 #
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27 # The fact that you are presently reading this means that you have had
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28 # knowledge of the CeCILL license and that you accept its terms.
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29 #
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30 """Some useful functions"""
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31
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32 import sys, os
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33 import random
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34 import subprocess
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35
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36
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37 def writeFile(fileName, content):
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38 """
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39 Write the content of a file
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40 """
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41 handle = open(fileName, "w")
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42 handle.write(content)
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43 handle.close()
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44
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45 def sumOfLists(list1, list2):
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46 """
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47 Element by element sum
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48 """
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49 if len(list1) != len(list2):
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50 sys.exit("Cannot sum list whose sizes are different!")
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51 return [list1[i] + list2[i] for i in range(len(list1))]
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52
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53
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54 def protectBackslashes(string):
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55 """
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56 Protect the backslashes in a path by adding another backslash
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57 """
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58 return string.replace("\\", "\\\\")
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59
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60
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61 def getHammingDistance(string1, string2):
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62 """
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63 Compute Hamming distance between two strings
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64 """
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65 if len(string1) != len(string2):
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66 raise Exception("Error, size of %s and %s differ" % (string1, string2))
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67 return sum(ch1 != ch2 for ch1, ch2 in zip(string1, string2))
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68
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69
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70 def getLevenshteinDistance(string1, string2):
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71 """
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72 Compute Levenshtein distance between two strings
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73 """
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74 if len(string1) < len(string2):
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75 return getLevenshteinDistance(string2, string1)
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76 if not string1:
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77 return len(string2)
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78 previousRow = xrange(len(string2) + 1)
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79 for i, c1 in enumerate(string1):
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80 currentRow = [i + 1]
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81 for j, c2 in enumerate(string2):
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82 insertions = previousRow[j + 1] + 1
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83 deletions = currentRow[j] + 1
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84 substitutions = previousRow[j] + (c1 != c2)
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85 currentRow.append(min(insertions, deletions, substitutions))
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86 previousRow = currentRow
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87 return previousRow[-1]
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88
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89
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90 def getMinAvgMedMax(values):
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91 """
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92 Get some stats about a dict
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93 @param values: a distribution (the value being the number of occurrences of the key)
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94 @type values: dict int to int
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95 @return: a tuple
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96 """
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97 minValues = min(values.keys())
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98 maxValues = max(values.keys())
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99 sumValues = sum([value * values[value] for value in values])
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100 nbValues = sum(values.values())
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101 allValues = []
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102 for key in values:
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103 for i in range(values[key]):
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104 allValues.append(key)
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105 sortedValues = sorted(allValues)
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106 sorted(values.values())
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107 if (nbValues % 2 == 0):
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108 medValues = (sortedValues[nbValues / 2 - 1] + sortedValues[nbValues / 2]) / 2.0
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109 else:
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110 medValues = sortedValues[(nbValues + 1) / 2 - 1]
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111 return (minValues, float(sumValues) / nbValues, medValues, maxValues)
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112
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113
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114 def xor(value1, value2):
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115 """
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116 Logical xor
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117 @param value1: a value
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118 @type value1: anything
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119 @param value2: a value
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120 @type value2: anything
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121 """
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122 return bool(value1) != bool(value2)
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123
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124
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125 def diff(fileName1, fileName2):
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126 """
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127 Compare two files
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128 @param fileName1: a file name
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129 @type fileName1: string
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130 @param fileName2: another file name
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131 @type fileName2: string
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132 @return: None if the files are the same, a string otherwise
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133 """
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134 handle1 = open(fileName1)
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135 lines1 = handle1.readlines()
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136 handle2 = open(fileName2)
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137 lines2 = handle2.readlines()
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138 if len(lines1) != len(lines2):
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139 print "Sizes of files differ (%d != %d)" % (len(lines1), len(lines2))
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140 return False
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141 for i in xrange(len(lines1)):
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142 if lines1[i] != lines2[i]:
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143 print "Line %d differ ('%s' != '%s')" % (i, lines1[i].strip(), lines2[i].strip())
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144 return False
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145 return True
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146
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147
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148 def binomialCoefficient(a, b):
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149 """
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150 Compute cumulated product from a to b
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151 @param a: a value
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152 @type a: int
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153 @param b: a value
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154 @type b: int
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155 """
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156 if a > b / 2:
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157 a = b-a
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158 p = 1.0
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159 for i in range(b-a+1, b+1):
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160 p *= i
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161 q = 1.0
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162 for i in range(1, a+1):
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163 q *= i
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164 return p / q
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165
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166
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167 memory = {}
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168
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169 # def fisherExactPValue(a, b, c, d):
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170 # """
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171 # P-value of Fisher exact test for 2x2 contingency table
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172 # """
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173 # if (a, b, c, d) in memory:
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174 # return memory[(a, b, c, d)]
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175
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176 # n = a + b + c + d
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177 # i1 = binomialCoefficient(a, a+b)
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178 # i2 = binomialCoefficient(c, a+c)
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179 # i3 = binomialCoefficient(c+d, n)
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180 # pValue = i1 * i2 / i3
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181
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182 # memory[(a, b, c, d)] = pValue
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183
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184 # return pValue
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185
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186
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187 def fisherExactPValue(a, b, c, d):
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188 if (a, b, c, d) in memory:
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189 return memory[(a, b, c, d)]
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190
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191 scriptFileName = "tmpScript-%d.R" % (random.randint(0, 10000))
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192 rScript = open(scriptFileName, "w")
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193 rScript.write("data = matrix(c(%d, %d, %d, %d), nr=2)\n" % (a, b, c, d))
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194 rScript.write("fisher.test(data)\n")
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195 #rScript.write("chisq.test(data)\n")
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196 rScript.close()
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197
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198 rCommand = "R"
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199 if "SMARTRPATH" in os.environ:
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200 rCommand = os.environ["SMARTRPATH"]
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201 command = "\"%s\" CMD BATCH %s" % (rCommand, scriptFileName)
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202 status = subprocess.call(command, shell=True)
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203
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204 if status != 0:
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205 sys.exit("Problem with the execution of script file %s, status is: %s" % (scriptFileName, status))
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206
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207 outputRFileName = "%sout" % (scriptFileName)
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208 outputRFile = open(outputRFileName)
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209 pValue = None
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210 pValueTag = "p-value "
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211 for line in outputRFile:
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212 line = line.strip()
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213 if line == "": continue
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214 for splittedLine in line.split(","):
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215 splittedLine = splittedLine.strip()
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216 if splittedLine.startswith(pValueTag):
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217 pValue = float(splittedLine.split()[-1])
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218 break
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219
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220 if pValue == None:
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221 sys.exit("Problem with the cannot find p-value! File %s, values are: %d, %d, %d, %d" % (scriptFileName, a, b, c, d))
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222
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223 os.remove(scriptFileName)
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224 os.remove(outputRFileName)
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225
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226 memory[(a, b, c, d)] = pValue
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227
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228 return pValue
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229
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230
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231 def fisherExactPValueBulk(list):
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232
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233 scriptFileName = "tmpScript-%d.R" % (random.randint(0, 10000))
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234 rScript = open(scriptFileName, "w")
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235 for element in list:
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236 rScript.write("fisher.test(matrix(c(%d, %d, %d, %d), nr=2))$p.value\n" % (int(element[0]), int(element[1]), int(element[2]), int(element[3])))
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237 rScript.close()
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238
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239 rCommand = "R"
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240 if "SMARTRPATH" in os.environ:
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241 rCommand = os.environ["SMARTRPATH"]
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242 command = "\"%s\" CMD BATCH %s" % (rCommand, scriptFileName)
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243 status = subprocess.call(command, shell=True)
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244
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245 if status != 0:
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246 sys.exit("Problem with the execution of script file %s, status is: %s" % (scriptFileName, status))
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247
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248 outputRFileName = "%sout" % (scriptFileName)
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249 outputRFile = open(outputRFileName)
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250 pValue = None
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251 pValueTag = "[1] "
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252 results = {}
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253 cpt = 0
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254 for line in outputRFile:
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255 line = line.strip()
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256 if line == "": continue
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257 if line.startswith(pValueTag):
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258 pValue = float(line.split()[-1])
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259 results[list[cpt][0:2]] = pValue
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260 cpt += 1
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261
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262 if pValue == None:
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263 sys.exit("Problem with the cannot find p-value!")
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264 if cpt != len(list):
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265 sys.exit("Error in the number of p-values computed by R in file '%s'!" % (scriptFileName))
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266
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267 os.remove(scriptFileName)
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268 os.remove(outputRFileName)
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269
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270 return results
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271