Mercurial Hosting > traffic-intelligence
annotate python/utils.py @ 398:3399bd48cb40
Ajout d'une méthode pour obtenir le nombre de FPS
Méthode de capture des trames vidéos plus résistante aux erreur
Utilisation d'un dictionnaire pour les fichier de configuration afin de garder le nom des sections
author | Jean-Philippe Jodoin <jpjodoin@gmail.com> |
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date | Mon, 29 Jul 2013 13:46:07 -0400 |
parents | b36b00dd27c3 |
children | a9e275b4ecb7 |
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1 #! /usr/bin/env python |
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2 ''' Generic utilities.''' |
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3 |
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4 #from numpy import * |
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5 #from pylab import * |
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6 from datetime import time, datetime |
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7 |
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8 __metaclass__ = type |
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9 |
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10 commentChar = '#' |
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11 |
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12 delimiterChar = '%'; |
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13 |
185
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14 ######################### |
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15 # Enumerations |
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16 ######################### |
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17 |
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18 def inverseEnumeration(l): |
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19 'Returns the dictionary that provides for each element in the input list its index in the input list' |
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20 result = {} |
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21 for i,x in enumerate(l): |
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22 result[x] = i |
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23 return result |
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24 |
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25 ######################### |
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26 # simple statistics |
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27 ######################### |
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28 |
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29 def confidenceInterval(mean, stdev, nSamples, percentConfidence, printLatex = False): |
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30 from math import sqrt |
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31 from scipy.stats.distributions import norm |
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32 k = round(norm.ppf(0.5+percentConfidence/200., 0, 1)*100)/100. # 1.-(100-percentConfidence)/200. |
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33 e = k*stdev/sqrt(nSamples) |
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34 if printLatex: |
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35 print('${0} \pm {1}\\frac{{{2}}}{{\sqrt{{{3}}}}}$'.format(mean, k, stdev, nSamples)) |
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36 return mean-e, mean+e |
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37 |
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38 def computeChi2(expected, observed): |
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39 '''Returns the Chi2 statistics''' |
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40 result = 0. |
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41 for e, o in zip(expected, observed): |
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42 result += ((e-o)*(e-o))/e |
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43 return result |
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44 |
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45 class EmpiricalDistribution: |
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46 def nSamples(self): |
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47 return sum(self.counts) |
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48 |
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49 def cumulativeDensityFunction(sample): |
276 | 50 '''Returns the cumulative density function of the sample of a random variable''' |
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51 from numpy.core.multiarray import array |
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52 from numpy.lib.function_base import unique |
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53 from numpy.core.fromnumeric import sum |
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54 a = array(sample) |
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55 a.sort() |
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56 xaxis = unique(a) |
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57 counts = [sum(a <= x) for x in xaxis] |
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58 return xaxis, counts |
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59 |
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60 class EmpiricalDiscreteDistribution(EmpiricalDistribution): |
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61 '''Class to represent a sample of a distribution for a discrete random variable |
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62 ''' |
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63 from numpy.core.fromnumeric import sum |
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64 |
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65 def __init__(self, categories, counts): |
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66 self.categories = categories |
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67 self.counts = counts |
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68 |
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69 def mean(self): |
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70 result = [float(x*y) for x,y in zip(self.categories, self.counts)] |
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71 return sum(result)/self.nSamples() |
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72 |
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73 def var(self, mean = None): |
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74 if not mean: |
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75 m = self.mean() |
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76 else: |
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77 m = mean |
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78 result = 0. |
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79 squares = [float((x-m)*(x-m)*y) for x,y in zip(self.categories, self.counts)] |
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80 return sum(squares)/(self.nSamples()-1) |
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81 |
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82 def referenceCounts(self, probability): |
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83 '''probability is a function that returns the probability of the random variable for the category values''' |
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84 refProba = [probability(c) for c in self.categories] |
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85 refProba[-1] = 1-sum(refProba[:-1]) |
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86 refCounts = [r*self.nSamples() for r in refProba] |
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87 return refCounts, refProba |
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88 |
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89 class EmpiricalContinuousDistribution(EmpiricalDistribution): |
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90 '''Class to represent a sample of a distribution for a continuous random variable |
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91 with the number of observations for each interval |
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92 intervals (categories variable) are defined by their left limits, the last one being the right limit |
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93 categories contain therefore one more element than the counts''' |
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94 def __init__(self, categories, counts): |
276 | 95 # todo add samples for initialization and everything to None? (or setSamples?) |
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96 self.categories = categories |
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97 self.counts = counts |
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98 |
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99 def mean(self): |
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100 result = 0. |
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101 for i in range(len(self.counts)-1): |
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102 result += self.counts[i]*(self.categories[i]+self.categories[i+1])/2 |
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103 return result/self.nSamples() |
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104 |
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105 def var(self, mean = None): |
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106 if not mean: |
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107 m = self.mean() |
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108 else: |
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109 m = mean |
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110 result = 0. |
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111 for i in range(len(self.counts)-1): |
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112 mid = (self.categories[i]+self.categories[i+1])/2 |
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113 result += self.counts[i]*(mid - m)*(mid - m) |
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114 return result/(self.nSamples()-1) |
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115 |
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116 def referenceCounts(self, cdf): |
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117 '''cdf is a cumulative distribution function |
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118 returning the probability of the variable being less that x''' |
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119 # refCumulativeCounts = [0]#[cdf(self.categories[0][0])] |
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120 # for inter in self.categories: |
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121 # refCumulativeCounts.append(cdf(inter[1])) |
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122 refCumulativeCounts = [cdf(x) for x in self.categories[1:-1]] |
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123 |
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124 refProba = [refCumulativeCounts[0]] |
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125 for i in xrange(1,len(refCumulativeCounts)): |
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126 refProba.append(refCumulativeCounts[i]-refCumulativeCounts[i-1]) |
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127 refProba.append(1-refCumulativeCounts[-1]) |
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128 refCounts = [p*self.nSamples() for p in refProba] |
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129 |
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130 return refCounts, refProba |
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131 |
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132 def printReferenceCounts(self, refCounts=None): |
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133 if refCounts: |
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134 ref = refCounts |
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135 else: |
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136 ref = self.referenceCounts |
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137 for i in xrange(len(ref[0])): |
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138 print('{0}-{1} & {2:0.3} & {3:0.3} \\\\'.format(self.categories[i],self.categories[i+1],ref[1][i], ref[0][i])) |
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139 |
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140 |
31
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141 ######################### |
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142 # maths section |
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143 ######################### |
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144 |
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145 def argMaxDict(d): |
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146 return max(d.iterkeys(), key=(lambda key: d[key])) |
279
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147 |
395
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148 def framesToTime(nFrames, frameRate, initialTime = time()): |
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149 '''returns a datetime.time for the time in hour, minutes and seconds |
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150 initialTime is a datetime.time''' |
248
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151 from math import floor |
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152 seconds = int(floor(float(nFrames)/float(frameRate))+initialTime.hour*3600+initialTime.minute*60+initialTime.second) |
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153 h = int(floor(seconds/3600.)) |
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154 seconds = seconds - h*3600 |
261
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155 m = int(floor(seconds/60)) |
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156 seconds = seconds - m*60 |
262
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157 return time(h, m, seconds) |
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158 |
381
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159 def timeToFrames(t, frameRate): |
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160 return frameRate*(t.hour*3600+t.minute*60+t.second) |
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161 |
241
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162 def sortXY(X,Y): |
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163 'returns the sorted (x, Y(x)) sorted on X' |
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164 D = {} |
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165 for x, y in zip(X,Y): |
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166 D[x]=y |
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167 xsorted = sorted(D.keys()) |
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168 return xsorted, [D[x] for x in xsorted] |
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169 |
32 | 170 def ceilDecimals(v, nDecimals): |
171 '''Rounds the number at the nth decimal | |
172 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3''' | |
173 from math import ceil,pow | |
174 tens = pow(10,nDecimals) | |
175 return ceil(v*tens)/tens | |
176 | |
152
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177 def inBetween(bound1, bound2, x): |
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178 return bound1 <= x <= bound2 or bound2 <= x<= bound1 |
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179 |
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180 def crossProduct(l1, l2): |
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181 return l1[0]*l2[1]-l1[1]*l2[0] |
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182 |
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183 def filterMovingWindow(input, halfWidth): |
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184 '''Returns an array obtained after the smoothing of the input by a moving average |
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185 The first and last points are copied from the original.''' |
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186 width = float(halfWidth*2+1) |
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187 win = ones(width,'d') |
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188 result = convolve(win/width,array(inputSignal),'same') |
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189 result[:halfWidth] = inputSignal[:halfWidth] |
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190 result[-halfWidth:] = inputSignal[-halfWidth:] |
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191 return result |
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192 |
199
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193 def linearRegression(x, y, deg = 1, plotData = False): |
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194 '''returns the least square estimation of the linear regression of y = ax+b |
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195 as well as the plot''' |
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196 from numpy.lib.polynomial import polyfit |
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197 from matplotlib.pyplot import plot |
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198 from numpy.core.multiarray import arange |
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199 coef = polyfit(x, y, deg) |
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200 if plotData: |
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201 def poly(x): |
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202 result = 0 |
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203 for i in range(len(coef)): |
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204 result += coef[i]*x**(len(coef)-i-1) |
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205 return result |
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206 plot(x, y, 'x') |
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207 xx = arange(min(x), max(x),(max(x)-min(x))/1000) |
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208 plot(xx, [poly(z) for z in xx]) |
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209 return coef |
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210 |
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211 ######################### |
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212 # sequence section |
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213 ######################### |
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214 |
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215 class LCSS: |
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216 '''Class that keeps the LCSS parameters |
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217 and puts together the various computations''' |
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218 def __init__(self, similarityFunc, delta = float('inf'), aligned = False, lengthFunc = min): |
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219 self.similarityFunc = similarityFunc |
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220 self.aligned = aligned |
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221 self.delta = delta |
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222 self.lengthFunc = lengthFunc |
389
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223 self.subSequenceIndices = [(0,0)] |
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224 |
373
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225 def similarities(self, l1, l2, jshift=0): |
370
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226 from numpy import zeros, int as npint |
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227 n1 = len(l1) |
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228 n2 = len(l2) |
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229 self.similarityTable = zeros((n1+1,n2+1), dtype = npint) |
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230 for i in xrange(1,n1+1): |
374
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231 for j in xrange(max(1,i-jshift-self.delta),min(n2,i-jshift+self.delta)+1): |
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232 if self.similarityFunc(l1[i-1], l2[j-1]): |
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233 self.similarityTable[i,j] = self.similarityTable[i-1,j-1]+1 |
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234 else: |
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235 self.similarityTable[i,j] = max(self.similarityTable[i-1,j], self.similarityTable[i,j-1]) |
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236 |
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237 def subSequence(self, i, j): |
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238 '''Returns the subsequence of two sequences |
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239 http://en.wikipedia.org/wiki/Longest_common_subsequence_problem''' |
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240 if i == 0 or j == 0: |
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241 return [] |
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242 elif self.similarityTable[i][j] == self.similarityTable[i][j-1]: |
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243 return self.subSequence(i, j-1) |
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244 elif self.similarityTable[i][j] == self.similarityTable[i-1][j]: |
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245 return self.subSequence(i-1, j) |
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246 else: |
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247 return self.subSequence(i-1, j-1) + [(i-1,j-1)] |
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248 |
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249 def _compute(self, _l1, _l2, computeSubSequence = False): |
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250 '''returns the longest common subsequence similarity |
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251 based on the threshold on distance between two elements of lists l1, l2 |
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252 similarityFunc returns True or False whether the two points are considered similar |
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253 |
373
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254 if aligned, returns the best matching if using a finite delta by shiftinig the series alignments |
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255 |
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256 eg distance(p1, p2) < epsilon |
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257 ''' |
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258 if len(_l2) < len(_l1): # l1 is the shortest |
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259 l1 = _l2 |
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260 l2 = _l1 |
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261 revertIndices = True |
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262 else: |
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263 l1 = _l1 |
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264 l2 = _l2 |
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265 revertIndices = False |
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266 n1 = len(l1) |
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267 n2 = len(l2) |
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268 |
370
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269 if self.aligned: |
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270 lcssValues = {} |
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271 similarityTables = {} |
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272 for i in xrange(-n2-self.delta+1, n1+self.delta): # interval such that [i-shift-delta, i-shift+delta] is never empty, which happens when i-shift+delta < 1 or when i-shift-delta > n2 |
373
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273 self.similarities(l1, l2, i) |
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274 lcssValues[i] = self.similarityTable.max() |
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275 similarityTables[i] = self.similarityTable |
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276 #print self.similarityTable |
389
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277 alignmentShift = argMaxDict(lcssValues) # ideally get the medium alignment shift, the one that minimizes distance |
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278 self.similarityTable = similarityTables[alignmentShift] |
372
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279 else: |
389
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280 alignmentShift = 0 |
372
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281 self.similarities(l1, l2) |
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282 |
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283 # threshold values for the useful part of the similarity table are n2-n1-delta and n1-n2-delta |
389
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284 self.similarityTable = self.similarityTable[:min(n1, n2+alignmentShift+self.delta)+1, :min(n2, n1-alignmentShift+self.delta)+1] |
373
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285 |
372
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286 if computeSubSequence: |
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287 self.subSequenceIndices = self.subSequence(self.similarityTable.shape[0]-1, self.similarityTable.shape[1]-1) |
371
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288 if revertIndices: |
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289 self.subSequenceIndices = [(j,i) for i,j in self.subSequenceIndices] |
372
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290 return self.similarityTable[-1,-1] |
370
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291 |
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292 def compute(self, l1, l2, computeSubSequence = False): |
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293 '''get methods are to be shadowed in child classes ''' |
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294 return self._compute(l1, l2, computeSubSequence) |
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295 |
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296 def computeAlignment(self): |
370
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297 from numpy import mean |
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298 return mean([j-i for i,j in self.subSequenceIndices]) |
370
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299 |
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300 def _computeNormalized(self, l1, l2, computeSubSequence = False): |
370
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301 ''' compute the normalized LCSS |
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302 ie, the LCSS divided by the min or mean of the indicator lengths (using lengthFunc) |
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303 lengthFunc = lambda x,y:float(x,y)/2''' |
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304 return float(self._compute(l1, l2, computeSubSequence))/self.lengthFunc(len(l1), len(l2)) |
370
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305 |
376
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306 def computeNormalized(self, l1, l2, computeSubSequence = False): |
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307 return self._computeNormalized(l1, l2, computeSubSequence) |
370
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308 |
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309 def _computeDistance(self, l1, l2, computeSubSequence = False): |
370
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310 ''' compute the LCSS distance''' |
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311 return 1-self._computeNormalized(l1, l2, computeSubSequence) |
370
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312 |
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313 def computeDistance(self, l1, l2, computeSubSequence = False): |
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314 return self._computeDistance(l1, l2, computeSubSequence) |
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315 |
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316 ######################### |
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317 # plotting section |
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318 ######################### |
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319 |
332
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320 def plotPolygon(poly, options = ''): |
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321 'Plots shapely polygon poly' |
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322 from numpy.core.multiarray import array |
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323 from matplotlib.pyplot import plot |
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324 from shapely.geometry import Polygon |
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325 |
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326 tmp = array(poly.exterior) |
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327 plot(tmp[:,0], tmp[:,1], options) |
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328 |
324 | 329 def stepPlot(X, firstX, lastX, initialCount = 0, increment = 1): |
330 '''for each value in X, increment by increment the initial count | |
297
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331 returns the lists that can be plotted |
324 | 332 to obtain a step plot increasing by one for each value in x, from first to last value |
333 firstX and lastX should be respectively smaller and larger than all elements in X''' | |
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334 |
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335 sortedX = [] |
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336 counts = [initialCount] |
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337 for x in sorted(X): |
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338 sortedX += [x,x] |
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339 counts.append(counts[-1]) |
324 | 340 counts.append(counts[-1]+increment) |
297
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341 counts.append(counts[-1]) |
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342 return [firstX]+sortedX+[lastX], counts |
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343 |
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344 class PlottingPropertyValues: |
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345 def __init__(self, values): |
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346 self.values = values |
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347 |
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348 def __getitem__(self, i): |
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349 return self.values[i%len(self.values)] |
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350 |
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351 markers = PlottingPropertyValues(['+', '*', ',', '.', 'x', 'D', 's', 'o']) |
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352 scatterMarkers = PlottingPropertyValues(['s','o','^','>','v','<','d','p','h','8','+','x']) |
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353 |
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354 linestyles = PlottingPropertyValues(['-', '--', '-.', ':']) |
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355 |
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356 colors = PlottingPropertyValues('brgmyck') # 'w' |
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357 |
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358 def plotIndicatorMap(indicatorMap, squareSize, masked = True, defaultValue=-1): |
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359 from numpy import array, arange, ones, ma |
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360 from matplotlib.pyplot import pcolor |
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361 coords = array(indicatorMap.keys()) |
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362 minX = min(coords[:,0]) |
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363 minY = min(coords[:,1]) |
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364 X = arange(minX, max(coords[:,0])+1.1)*squareSize |
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365 Y = arange(minY, max(coords[:,1])+1.1)*squareSize |
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366 C = defaultValue*ones((len(Y), len(X))) |
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367 for k,v in indicatorMap.iteritems(): |
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368 C[k[1]-minY,k[0]-minX] = v |
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369 if masked: |
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370 pcolor(X, Y, ma.masked_where(C==defaultValue,C)) |
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371 else: |
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372 pcolor(X, Y, C) |
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373 |
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374 ######################### |
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375 # file I/O section |
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376 ######################### |
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377 |
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378 def openCheck(filename, option = 'r', quit = False): |
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379 '''Open file filename in read mode by default |
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380 and checks it is open''' |
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381 try: |
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382 return open(filename, option) |
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383 except IOError: |
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384 print 'File %s could not be opened.' % filename |
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385 if quit: |
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386 from sys import exit |
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387 exit() |
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388 return None |
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389 |
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390 def readline(f, commentCharacter = commentChar): |
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391 '''Modified readline function to skip comments.''' |
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392 s = f.readline() |
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393 while (len(s) > 0) and s.startswith(commentCharacter): |
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394 s = f.readline() |
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395 return s.strip() |
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396 |
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397 def getLines(f, delimiterCharacter = delimiterChar): |
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398 '''Gets a complete entry (all the lines) in between delimiterChar.''' |
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399 dataStrings = [] |
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400 s = readline(f) |
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401 while (len(s) > 0) and (not s.startswith(delimiterCharacter)): |
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402 dataStrings += [s.strip()] |
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403 s = readline(f) |
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404 return dataStrings |
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405 |
304
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406 class FakeSecHead(object): |
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407 '''Add fake section header [asection] |
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408 |
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409 from http://stackoverflow.com/questions/2819696/parsing-properties-file-in-python/2819788#2819788 |
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410 use read_file in Python 3.2+ |
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411 ''' |
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412 def __init__(self, fp): |
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413 self.fp = fp |
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414 self.sechead = '[main]\n' |
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415 |
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416 def readline(self): |
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417 if self.sechead: |
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418 try: return self.sechead |
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419 finally: self.sechead = None |
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420 else: return self.fp.readline() |
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421 |
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422 def removeExtension(filename, delimiter = '.'): |
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423 '''Returns the filename minus the extension (all characters after last .)''' |
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424 i = filename.rfind(delimiter) |
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425 if i>0: |
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426 return filename[:i] |
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427 else: |
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428 return filename |
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429 |
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430 def cleanFilename(s): |
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431 'cleans filenames obtained when contatenating figure characteristics' |
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432 return s.replace(' ','-').replace('.','').replace('/','-') |
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433 |
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434 def listfiles(dirname, extension, remove = False): |
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435 '''Returns the list of files with the extension in the directory dirname |
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436 If remove is True, the filenames are stripped from the extension''' |
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437 from os import listdir |
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438 tmp = [f for f in listdir(dirname) if f.endswith(extension)] |
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439 tmp.sort() |
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440 if remove: |
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441 return [removeExtension(f, extension) for f in tmp] |
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442 else: |
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443 return tmp |
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444 |
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445 def mkdir(dirname): |
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446 'Creates a directory if it does not exist' |
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447 import os |
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448 if not os.path.exists(dirname): |
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449 os.mkdir(dirname) |
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450 else: |
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451 print(dirname+' already exists') |
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452 |
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453 def removeFile(filename): |
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454 '''Deletes the file while avoiding raising an error |
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455 if the file does not exist''' |
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456 import os |
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457 if (os.path.exists(filename)): |
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458 os.remove(filename) |
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459 else: |
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460 print(filename+' does not exist') |
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461 |
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462 def line2Floats(l, separator=' '): |
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463 '''Returns the list of floats corresponding to the string''' |
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464 return [float(x) for x in l.split(separator)] |
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465 |
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466 def line2Ints(l, separator=' '): |
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467 '''Returns the list of ints corresponding to the string''' |
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468 return [int(x) for x in l.split(separator)] |
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469 |
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470 ######################### |
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471 # CLI utils |
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472 ######################### |
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473 |
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474 def parseCLIOptions(helpMessage, options, cliArgs, optionalOptions=[]): |
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475 ''' Simple function to handle similar argument parsing |
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476 Returns the dictionary of options and their values |
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477 |
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478 * cliArgs are most likely directly sys.argv |
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479 (only the elements after the first one are considered) |
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480 |
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481 * options should be a list of strings for getopt options, |
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482 eg ['frame=','correspondences=','video='] |
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483 A value must be provided for each option, or the program quits''' |
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484 import sys, getopt |
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485 from numpy.core.fromnumeric import all |
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486 optionValues, args = getopt.getopt(cliArgs[1:], 'h', ['help']+options+optionalOptions) |
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487 optionValues = dict(optionValues) |
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488 |
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489 if '--help' in optionValues.keys() or '-h' in optionValues.keys(): |
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490 print(helpMessage+ |
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491 '\n - Compulsory options: '+' '.join([opt.replace('=','') for opt in options])+ |
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492 '\n - Non-compulsory options: '+' '.join([opt.replace('=','') for opt in optionalOptions])) |
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493 sys.exit() |
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494 |
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495 missingArgument = [('--'+opt.replace('=','') in optionValues.keys()) for opt in options] |
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496 if not all(missingArgument): |
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497 print('Missing argument') |
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498 print(optionValues) |
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499 sys.exit() |
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500 |
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501 return optionValues |
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502 |
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503 |
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504 ######################### |
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505 # Utils to read .ini type text files for configuration, meta data... |
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506 ######################### |
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507 |
333
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508 class TrackingParameters: |
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509 def loadConfigFile(self, filename): |
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510 from ConfigParser import ConfigParser |
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511 from numpy import loadtxt |
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512 from os import path |
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513 |
333
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514 config = ConfigParser() |
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515 config.readfp(FakeSecHead(openCheck(filename))) |
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516 self.sectionHeader = config.sections()[0] |
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517 self.videoFilename = config.get(self.sectionHeader, 'video-filename') |
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518 self.databaseFilename = config.get(self.sectionHeader, 'database-filename') |
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519 self.homographyFilename = config.get(self.sectionHeader, 'homography-filename') |
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520 if (path.exists(self.homographyFilename)): |
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521 self.homography = loadtxt(self.homographyFilename) |
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522 else: |
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523 self.homography = None |
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524 self.firstFrameNum = config.getint(self.sectionHeader, 'frame1') |
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525 self.videoFrameRate = config.getfloat(self.sectionHeader, 'video-fps') |
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526 |
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527 self.maxPredictedSpeed = config.getfloat(self.sectionHeader, 'max-predicted-speed')/3.6/self.videoFrameRate |
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528 self.predictionTimeHorizon = config.getfloat(self.sectionHeader, 'prediction-time-horizon')*self.videoFrameRate |
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529 self.collisionDistance = config.getfloat(self.sectionHeader, 'collision-distance') |
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530 self.crossingZones = config.getboolean(self.sectionHeader, 'crossing-zones') |
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531 self.predictionMethod = config.get(self.sectionHeader, 'prediction-method') |
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532 self.nPredictedTrajectories = config.getint(self.sectionHeader, 'npredicted-trajectories') |
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533 self.minAcceleration = config.getfloat(self.sectionHeader, 'min-acceleration')/self.videoFrameRate**2 |
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534 self.maxAcceleration = config.getfloat(self.sectionHeader, 'max-acceleration')/self.videoFrameRate**2 |
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535 self.maxSteering = config.getfloat(self.sectionHeader, 'max-steering')/self.videoFrameRate |
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536 self.useFeaturesForPrediction = config.getboolean(self.sectionHeader, 'use-features-prediction') |
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537 |
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538 class SceneParameters: |
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539 def __init__(self, config, sectionName): |
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540 from ConfigParser import NoOptionError |
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541 from ast import literal_eval |
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542 try: |
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543 self.sitename = config.get(sectionName, 'sitename') |
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544 self.databaseFilename = config.get(sectionName, 'data_filename') |
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545 self.homographyFilename = config.get(sectionName, 'homography_filename') |
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546 self.videoFilename = config.get(sectionName, 'video_filename') |
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547 self.date = datetime.strptime(config.get(sectionName, 'date'), "%Y-%m-%d %H:%M:%S") # 2011-06-22 11:00:39 |
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548 self.translation = literal_eval(config.get(sectionName, 'translation')) # = [0.0, 0.0] |
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549 self.rotation = config.getfloat(sectionName, 'rotation') |
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550 self.duration = config.getint(sectionName, 'duration') |
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551 except NoOptionError as e: |
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552 print(e) |
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553 print('Not a section for scene meta-data') |
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554 |
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555 @staticmethod |
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556 def loadConfigFile(filename): |
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557 from ConfigParser import ConfigParser |
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558 config = ConfigParser() |
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559 config.readfp(openCheck(filename)) |
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560 configDict = dict() |
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561 for sectionName in config.sections(): |
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562 configDict[sectionName] = SceneParameters(config, sectionName) |
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563 return configDict |
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564 |
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565 |
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566 ######################### |
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567 # sqlite |
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568 ######################### |
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569 |
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570 def printDBError(error): |
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571 print('DB Error: {}'.format(error)) |
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572 |
235
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573 def dropTables(connection, tableNames): |
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574 'deletes the table with names in tableNames' |
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575 import sqlite3 |
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576 try: |
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577 cursor = connection.cursor() |
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578 for tableName in tableNames: |
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579 cursor.execute('DROP TABLE IF EXISTS '+tableName) |
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580 except sqlite3.OperationalError as error: |
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581 printDBError(error) |
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582 |
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583 ######################### |
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584 # running tests |
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585 ######################### |
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586 |
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587 if __name__ == "__main__": |
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588 import doctest |
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589 import unittest |
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590 suite = doctest.DocFileSuite('tests/utils.txt') |
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591 #suite = doctest.DocTestSuite() |
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592 unittest.TextTestRunner().run(suite) |
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593 #doctest.testmod() |
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594 #doctest.testfile("example.txt") |