annotate python/utils.py @ 405:a9e275b4ecb7

modification of the scene.cfg format
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 31 Jul 2013 02:54:18 -0400
parents 3399bd48cb40
children 4fce27946c60
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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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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
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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):
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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):
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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 #########################
370
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142 # maths section
27
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143 #########################
24
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144
370
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145 def argMaxDict(d):
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diff changeset
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
395
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152 seconds = int(floor(float(nFrames)/float(frameRate))+initialTime.hour*3600+initialTime.minute*60+initialTime.second)
261
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diff changeset
153 h = int(floor(seconds/3600.))
248
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154 seconds = seconds - h*3600
261
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155 m = int(floor(seconds/60))
248
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156 seconds = seconds - m*60
262
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157 return time(h, m, seconds)
248
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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
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170 def ceilDecimals(v, nDecimals):
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171 '''Rounds the number at the nth decimal
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172 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3'''
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173 from math import ceil,pow
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174 tens = pow(10,nDecimals)
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175 return ceil(v*tens)/tens
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176
152
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177 def inBetween(bound1, bound2, x):
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diff changeset
178 return bound1 <= x <= bound2 or bound2 <= x<= bound1
24
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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
29
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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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diff changeset
190 result[-halfWidth:] = inputSignal[-halfWidth:]
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191 return result
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192
199
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diff changeset
193 def linearRegression(x, y, deg = 1, plotData = False):
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diff changeset
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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diff changeset
196 from numpy.lib.polynomial import polyfit
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diff changeset
197 from matplotlib.pyplot import plot
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diff changeset
198 from numpy.core.multiarray import arange
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diff changeset
199 coef = polyfit(x, y, deg)
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diff changeset
200 if plotData:
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diff changeset
201 def poly(x):
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diff changeset
202 result = 0
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diff changeset
203 for i in range(len(coef)):
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diff changeset
204 result += coef[i]*x**(len(coef)-i-1)
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diff changeset
205 return result
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diff changeset
206 plot(x, y, 'x')
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diff changeset
207 xx = arange(min(x), max(x),(max(x)-min(x))/1000)
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diff changeset
208 plot(xx, [poly(z) for z in xx])
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diff changeset
209 return coef
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diff changeset
210
27
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diff changeset
211 #########################
370
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diff changeset
212 # sequence section
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diff changeset
213 #########################
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diff changeset
214
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diff changeset
215 class LCSS:
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diff changeset
216 '''Class that keeps the LCSS parameters
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diff changeset
217 and puts together the various computations'''
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diff changeset
218 def __init__(self, similarityFunc, delta = float('inf'), aligned = False, lengthFunc = min):
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diff changeset
219 self.similarityFunc = similarityFunc
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diff changeset
220 self.aligned = aligned
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diff changeset
221 self.delta = delta
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diff changeset
222 self.lengthFunc = lengthFunc
389
6d26dcc7bba0 modifications to compute alignment for None indicators
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diff changeset
223 self.subSequenceIndices = [(0,0)]
370
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diff changeset
224
373
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diff changeset
225 def similarities(self, l1, l2, jshift=0):
370
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diff changeset
226 from numpy import zeros, int as npint
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diff changeset
227 n1 = len(l1)
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diff changeset
228 n2 = len(l2)
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diff changeset
229 self.similarityTable = zeros((n1+1,n2+1), dtype = npint)
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diff changeset
230 for i in xrange(1,n1+1):
374
a7af3519687e finished implementation of aligned LCSS with matching sequence decoded
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diff changeset
231 for j in xrange(max(1,i-jshift-self.delta),min(n2,i-jshift+self.delta)+1):
370
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diff changeset
232 if self.similarityFunc(l1[i-1], l2[j-1]):
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diff changeset
233 self.similarityTable[i,j] = self.similarityTable[i-1,j-1]+1
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diff changeset
234 else:
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diff changeset
235 self.similarityTable[i,j] = max(self.similarityTable[i-1,j], self.similarityTable[i,j-1])
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diff changeset
236
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diff changeset
237 def subSequence(self, i, j):
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diff changeset
238 '''Returns the subsequence of two sequences
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diff changeset
239 http://en.wikipedia.org/wiki/Longest_common_subsequence_problem'''
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diff changeset
240 if i == 0 or j == 0:
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diff changeset
241 return []
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diff changeset
242 elif self.similarityTable[i][j] == self.similarityTable[i][j-1]:
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diff changeset
243 return self.subSequence(i, j-1)
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diff changeset
244 elif self.similarityTable[i][j] == self.similarityTable[i-1][j]:
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diff changeset
245 return self.subSequence(i-1, j)
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diff changeset
246 else:
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diff changeset
247 return self.subSequence(i-1, j-1) + [(i-1,j-1)]
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diff changeset
248
373
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diff changeset
249 def _compute(self, _l1, _l2, computeSubSequence = False):
370
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diff changeset
250 '''returns the longest common subsequence similarity
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diff changeset
251 based on the threshold on distance between two elements of lists l1, l2
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diff changeset
252 similarityFunc returns True or False whether the two points are considered similar
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diff changeset
253
373
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diff changeset
254 if aligned, returns the best matching if using a finite delta by shiftinig the series alignments
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diff changeset
255
370
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diff changeset
256 eg distance(p1, p2) < epsilon
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diff changeset
257 '''
372
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diff changeset
258 if len(_l2) < len(_l1): # l1 is the shortest
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diff changeset
259 l1 = _l2
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diff changeset
260 l2 = _l1
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diff changeset
261 revertIndices = True
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parents: 371
diff changeset
262 else:
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diff changeset
263 l1 = _l1
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parents: 371
diff changeset
264 l2 = _l2
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parents: 371
diff changeset
265 revertIndices = False
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parents: 371
diff changeset
266 n1 = len(l1)
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parents: 371
diff changeset
267 n2 = len(l2)
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parents: 371
diff changeset
268
370
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diff changeset
269 if self.aligned:
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parents: 369
diff changeset
270 lcssValues = {}
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diff changeset
271 similarityTables = {}
374
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diff changeset
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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diff changeset
273 self.similarities(l1, l2, i)
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diff changeset
274 lcssValues[i] = self.similarityTable.max()
370
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diff changeset
275 similarityTables[i] = self.similarityTable
374
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diff changeset
276 #print self.similarityTable
389
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diff changeset
277 alignmentShift = argMaxDict(lcssValues) # ideally get the medium alignment shift, the one that minimizes distance
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diff changeset
278 self.similarityTable = similarityTables[alignmentShift]
372
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diff changeset
279 else:
389
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280 alignmentShift = 0
372
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281 self.similarities(l1, l2)
373
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282
374
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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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diff changeset
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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diff changeset
288 if revertIndices:
374
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289 self.subSequenceIndices = [(j,i) for i,j in self.subSequenceIndices]
372
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diff changeset
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
375
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296 def computeAlignment(self):
370
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297 from numpy import mean
374
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298 return mean([j-i for i,j in self.subSequenceIndices])
370
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299
376
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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'''
376
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diff changeset
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
376
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309 def _computeDistance(self, l1, l2, computeSubSequence = False):
370
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310 ''' compute the LCSS distance'''
376
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diff changeset
311 return 1-self._computeNormalized(l1, l2, computeSubSequence)
370
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312
376
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313 def computeDistance(self, l1, l2, computeSubSequence = False):
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diff changeset
314 return self._computeDistance(l1, l2, computeSubSequence)
370
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315
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diff changeset
316 #########################
45
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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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diff changeset
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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diff changeset
326 tmp = array(poly.exterior)
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diff changeset
327 plot(tmp[:,0], tmp[:,1], options)
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328
324
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329 def stepPlot(X, firstX, lastX, initialCount = 0, increment = 1):
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diff changeset
330 '''for each value in X, increment by increment the initial count
297
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diff changeset
331 returns the lists that can be plotted
324
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diff changeset
332 to obtain a step plot increasing by one for each value in x, from first to last value
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diff changeset
333 firstX and lastX should be respectively smaller and larger than all elements in X'''
297
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diff changeset
334
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diff changeset
335 sortedX = []
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diff changeset
336 counts = [initialCount]
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337 for x in sorted(X):
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diff changeset
338 sortedX += [x,x]
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diff changeset
339 counts.append(counts[-1])
324
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diff changeset
340 counts.append(counts[-1]+increment)
297
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diff changeset
341 counts.append(counts[-1])
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diff changeset
342 return [firstX]+sortedX+[lastX], counts
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diff changeset
343
45
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diff changeset
344 class PlottingPropertyValues:
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345 def __init__(self, values):
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346 self.values = values
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diff changeset
347
116
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diff changeset
348 def __getitem__(self, i):
45
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diff changeset
349 return self.values[i%len(self.values)]
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350
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diff changeset
351 markers = PlottingPropertyValues(['+', '*', ',', '.', 'x', 'D', 's', 'o'])
116
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diff changeset
352 scatterMarkers = PlottingPropertyValues(['s','o','^','>','v','<','d','p','h','8','+','x'])
45
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diff changeset
353
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diff changeset
354 linestyles = PlottingPropertyValues(['-', '--', '-.', ':'])
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diff changeset
355
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diff changeset
356 colors = PlottingPropertyValues('brgmyck') # 'w'
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diff changeset
357
115
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diff changeset
358 def plotIndicatorMap(indicatorMap, squareSize, masked = True, defaultValue=-1):
65
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diff changeset
359 from numpy import array, arange, ones, ma
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diff changeset
360 from matplotlib.pyplot import pcolor
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diff changeset
361 coords = array(indicatorMap.keys())
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diff changeset
362 minX = min(coords[:,0])
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diff changeset
363 minY = min(coords[:,1])
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diff changeset
364 X = arange(minX, max(coords[:,0])+1.1)*squareSize
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diff changeset
365 Y = arange(minY, max(coords[:,1])+1.1)*squareSize
115
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diff changeset
366 C = defaultValue*ones((len(Y), len(X)))
65
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diff changeset
367 for k,v in indicatorMap.iteritems():
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diff changeset
368 C[k[1]-minY,k[0]-minX] = v
115
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diff changeset
369 if masked:
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diff changeset
370 pcolor(X, Y, ma.masked_where(C==defaultValue,C))
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diff changeset
371 else:
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diff changeset
372 pcolor(X, Y, C)
65
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diff changeset
373
45
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diff changeset
374 #########################
27
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diff changeset
375 # file I/O section
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diff changeset
376 #########################
24
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diff changeset
377
0
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parents:
diff changeset
378 def openCheck(filename, option = 'r', quit = False):
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379 '''Open file filename in read mode by default
31
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diff changeset
380 and checks it is open'''
0
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parents:
diff changeset
381 try:
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382 return open(filename, option)
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diff changeset
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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diff changeset
386 from sys import exit
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387 exit()
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388 return None
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parents:
diff changeset
389
48
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diff changeset
390 def readline(f, commentCharacter = commentChar):
0
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parents:
diff changeset
391 '''Modified readline function to skip comments.'''
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diff changeset
392 s = f.readline()
48
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diff changeset
393 while (len(s) > 0) and s.startswith(commentCharacter):
0
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parents:
diff changeset
394 s = f.readline()
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parents:
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395 return s.strip()
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parents:
diff changeset
396
48
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diff changeset
397 def getLines(f, delimiterCharacter = delimiterChar):
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diff changeset
398 '''Gets a complete entry (all the lines) in between delimiterChar.'''
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parents: 46
diff changeset
399 dataStrings = []
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Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
400 s = readline(f)
8aed225f71d8 rearranged code for function readline and getlines (and characters), moved invertHomography to cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
401 while (len(s) > 0) and (not s.startswith(delimiterCharacter)):
8aed225f71d8 rearranged code for function readline and getlines (and characters), moved invertHomography to cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
402 dataStrings += [s.strip()]
8aed225f71d8 rearranged code for function readline and getlines (and characters), moved invertHomography to cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
403 s = readline(f)
8aed225f71d8 rearranged code for function readline and getlines (and characters), moved invertHomography to cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
404 return dataStrings
8aed225f71d8 rearranged code for function readline and getlines (and characters), moved invertHomography to cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 46
diff changeset
405
304
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
406 class FakeSecHead(object):
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
407 '''Add fake section header [asection]
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
408
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
409 from http://stackoverflow.com/questions/2819696/parsing-properties-file-in-python/2819788#2819788
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
410 use read_file in Python 3.2+
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
411 '''
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
412 def __init__(self, fp):
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
413 self.fp = fp
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
414 self.sechead = '[main]\n'
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
415
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
416 def readline(self):
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
417 if self.sechead:
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
418 try: return self.sechead
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
419 finally: self.sechead = None
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
420 else: return self.fp.readline()
20f9cd972dde added capability to parse cfg file for display-trajectories.py
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 301
diff changeset
421
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
422 def removeExtension(filename, delimiter = '.'):
31
c000f37c316d moved tests to independent file, added chi2 computation
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parents: 29
diff changeset
423 '''Returns the filename minus the extension (all characters after last .)'''
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
424 i = filename.rfind(delimiter)
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
425 if i>0:
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
426 return filename[:i]
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
427 else:
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
428 return filename
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
429
46
b5d007612e16 added filename util
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 45
diff changeset
430 def cleanFilename(s):
b5d007612e16 added filename util
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 45
diff changeset
431 'cleans filenames obtained when contatenating figure characteristics'
266
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
432 return s.replace(' ','-').replace('.','').replace('/','-')
46
b5d007612e16 added filename util
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 45
diff changeset
433
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
434 def listfiles(dirname, extension, remove = False):
14
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
435 '''Returns the list of files with the extension in the directory dirname
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
436 If remove is True, the filenames are stripped from the extension'''
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
437 from os import listdir
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
438 tmp = [f for f in listdir(dirname) if f.endswith(extension)]
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
439 tmp.sort()
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
440 if remove:
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
441 return [removeExtension(f, extension) for f in tmp]
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
442 else:
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
443 return tmp
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
444
266
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
445 def mkdir(dirname):
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
446 'Creates a directory if it does not exist'
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
447 import os
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
448 if not os.path.exists(dirname):
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
449 os.mkdir(dirname)
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
450 else:
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
451 print(dirname+' already exists')
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
452
14
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
453 def removeFile(filename):
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
454 '''Deletes the file while avoiding raising an error
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
455 if the file does not exist'''
266
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
456 import os
14
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
457 if (os.path.exists(filename)):
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
458 os.remove(filename)
266
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
459 else:
aba9711b3149 small modificatons and reorganization
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 262
diff changeset
460 print(filename+' does not exist')
14
e7bbe8465591 homography and other utils
Nicolas Saunier <nico@confins.net>
parents: 7
diff changeset
461
42
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
462 def line2Floats(l, separator=' '):
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
463 '''Returns the list of floats corresponding to the string'''
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
464 return [float(x) for x in l.split(separator)]
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
465
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
466 def line2Ints(l, separator=' '):
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
467 '''Returns the list of ints corresponding to the string'''
1a2ac2d4f53a added loading of the rest of the data for objects
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 35
diff changeset
468 return [int(x) for x in l.split(separator)]
31
c000f37c316d moved tests to independent file, added chi2 computation
Nicolas Saunier <nico@confins.net>
parents: 29
diff changeset
469
c000f37c316d moved tests to independent file, added chi2 computation
Nicolas Saunier <nico@confins.net>
parents: 29
diff changeset
470 #########################
332
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
471 # CLI utils
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
472 #########################
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
473
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
474 def parseCLIOptions(helpMessage, options, cliArgs, optionalOptions=[]):
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
475 ''' Simple function to handle similar argument parsing
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
476 Returns the dictionary of options and their values
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
477
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
478 * cliArgs are most likely directly sys.argv
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
479 (only the elements after the first one are considered)
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
480
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
481 * options should be a list of strings for getopt options,
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
482 eg ['frame=','correspondences=','video=']
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
483 A value must be provided for each option, or the program quits'''
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
484 import sys, getopt
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
485 from numpy.core.fromnumeric import all
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
486 optionValues, args = getopt.getopt(cliArgs[1:], 'h', ['help']+options+optionalOptions)
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
487 optionValues = dict(optionValues)
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
488
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
489 if '--help' in optionValues.keys() or '-h' in optionValues.keys():
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
490 print(helpMessage+
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
491 '\n - Compulsory options: '+' '.join([opt.replace('=','') for opt in options])+
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
492 '\n - Non-compulsory options: '+' '.join([opt.replace('=','') for opt in optionalOptions]))
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
493 sys.exit()
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
494
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
495 missingArgument = [('--'+opt.replace('=','') in optionValues.keys()) for opt in options]
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
496 if not all(missingArgument):
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
497 print('Missing argument')
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
498 print(optionValues)
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
499 sys.exit()
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
500
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
501 return optionValues
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
502
397
b36b00dd27c3 added function to read scene metadata
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 395
diff changeset
503
b36b00dd27c3 added function to read scene metadata
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 395
diff changeset
504 #########################
b36b00dd27c3 added function to read scene metadata
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 395
diff changeset
505 # Utils to read .ini type text files for configuration, meta data...
b36b00dd27c3 added function to read scene metadata
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 395
diff changeset
506 #########################
b36b00dd27c3 added function to read scene metadata
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 395
diff changeset
507
333
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
508 class TrackingParameters:
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
509 def loadConfigFile(self, filename):
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
510 from ConfigParser import ConfigParser
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
511 from numpy import loadtxt
364
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
512 from os import path
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
513
333
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
514 config = ConfigParser()
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
515 config.readfp(FakeSecHead(openCheck(filename)))
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
516 self.sectionHeader = config.sections()[0]
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
517 self.videoFilename = config.get(self.sectionHeader, 'video-filename')
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
518 self.databaseFilename = config.get(self.sectionHeader, 'database-filename')
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
519 self.homographyFilename = config.get(self.sectionHeader, 'homography-filename')
364
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
520 if (path.exists(self.homographyFilename)):
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
521 self.homography = loadtxt(self.homographyFilename)
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
522 else:
a50a69e04c2a script modification so that command line arguments take precedence over config file
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 352
diff changeset
523 self.homography = None
333
c9201f6b143a moved the config parser to utils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 332
diff changeset
524 self.firstFrameNum = config.getint(self.sectionHeader, 'frame1')
348
c64a4f889b97 added safety analysis options to feature tracking (with default values for backward compatibility)
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 344
diff changeset
525 self.videoFrameRate = config.getfloat(self.sectionHeader, 'video-fps')
332
a6ca86107f27 reorganized utils module
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 324
diff changeset
526
350
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
527 self.maxPredictedSpeed = config.getfloat(self.sectionHeader, 'max-predicted-speed')/3.6/self.videoFrameRate
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
528 self.predictionTimeHorizon = config.getfloat(self.sectionHeader, 'prediction-time-horizon')*self.videoFrameRate
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
529 self.collisionDistance = config.getfloat(self.sectionHeader, 'collision-distance')
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
530 self.crossingZones = config.getboolean(self.sectionHeader, 'crossing-zones')
352
72aa44072093 safety analysis script with option for prediction method
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 351
diff changeset
531 self.predictionMethod = config.get(self.sectionHeader, 'prediction-method')
350
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
532 self.nPredictedTrajectories = config.getint(self.sectionHeader, 'npredicted-trajectories')
7e9ad2d9d79c added new parameters in safety analysis script
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 348
diff changeset
533 self.minAcceleration = config.getfloat(self.sectionHeader, 'min-acceleration')/self.videoFrameRate**2
7e9ad2d9d79c added new parameters in safety analysis script
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diff changeset
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
351
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536 self.useFeaturesForPrediction = config.getboolean(self.sectionHeader, 'use-features-prediction')
350
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537
397
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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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Nicolas Saunier <nicolas.saunier@polymtl.ca>
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diff changeset
541 from ast import literal_eval
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542 try:
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543 self.sitename = config.get(sectionName, 'sitename')
405
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544 self.databaseFilename = config.get(sectionName, 'data-filename')
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diff changeset
545 self.homographyFilename = config.get(sectionName, 'homography-filename')
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diff changeset
546 self.calibrationFilename = config.get(sectionName, 'calibration-filename')
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diff changeset
547 self.videoFilename = config.get(sectionName, 'video-filename')
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diff changeset
548 self.frameRate = config.getfloat(sectionName, 'framerate')
397
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549 self.date = datetime.strptime(config.get(sectionName, 'date'), "%Y-%m-%d %H:%M:%S") # 2011-06-22 11:00:39
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diff changeset
550 self.translation = literal_eval(config.get(sectionName, 'translation')) # = [0.0, 0.0]
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diff changeset
551 self.rotation = config.getfloat(sectionName, 'rotation')
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diff changeset
552 self.duration = config.getint(sectionName, 'duration')
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553 except NoOptionError as e:
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554 print(e)
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555 print('Not a section for scene meta-data')
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556
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557 @staticmethod
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558 def loadConfigFile(filename):
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559 from ConfigParser import ConfigParser
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560 config = ConfigParser()
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diff changeset
561 config.readfp(openCheck(filename))
398
3399bd48cb40 Ajout d'une méthode pour obtenir le nombre de FPS
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diff changeset
562 configDict = dict()
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diff changeset
563 for sectionName in config.sections():
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parents: 397
diff changeset
564 configDict[sectionName] = SceneParameters(config, sectionName)
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diff changeset
565 return configDict
397
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diff changeset
566
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parents: 395
diff changeset
567
332
a6ca86107f27 reorganized utils module
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diff changeset
568 #########################
233
ab1a11176d7b initial sqlite code and bug corrected in cvutils
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569 # sqlite
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570 #########################
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diff changeset
571
344
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parents: 333
diff changeset
572 def printDBError(error):
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diff changeset
573 print('DB Error: {}'.format(error))
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diff changeset
574
235
584613399513 added script and functions to remove object tables
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 233
diff changeset
575 def dropTables(connection, tableNames):
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parents: 233
diff changeset
576 'deletes the table with names in tableNames'
352
72aa44072093 safety analysis script with option for prediction method
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diff changeset
577 import sqlite3
344
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parents: 333
diff changeset
578 try:
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parents: 333
diff changeset
579 cursor = connection.cursor()
14a2405f54f8 slight modification to safety analysis and generalized script to delete computed data (objects and interactions)
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diff changeset
580 for tableName in tableNames:
391
03dbecd3a887 modified feature grouping to return vectors of pointers to feature trajectories
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 389
diff changeset
581 cursor.execute('DROP TABLE IF EXISTS '+tableName)
344
14a2405f54f8 slight modification to safety analysis and generalized script to delete computed data (objects and interactions)
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 333
diff changeset
582 except sqlite3.OperationalError as error:
14a2405f54f8 slight modification to safety analysis and generalized script to delete computed data (objects and interactions)
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 333
diff changeset
583 printDBError(error)
233
ab1a11176d7b initial sqlite code and bug corrected in cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 199
diff changeset
584
ab1a11176d7b initial sqlite code and bug corrected in cvutils
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 199
diff changeset
585 #########################
31
c000f37c316d moved tests to independent file, added chi2 computation
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parents: 29
diff changeset
586 # running tests
c000f37c316d moved tests to independent file, added chi2 computation
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parents: 29
diff changeset
587 #########################
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Nicolas Saunier <nico@confins.net>
parents: 29
diff changeset
588
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
589 if __name__ == "__main__":
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
590 import doctest
2
de5642925615 started implementation of TimeInterval and Spatio-temporal object
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 0
diff changeset
591 import unittest
31
c000f37c316d moved tests to independent file, added chi2 computation
Nicolas Saunier <nico@confins.net>
parents: 29
diff changeset
592 suite = doctest.DocFileSuite('tests/utils.txt')
c000f37c316d moved tests to independent file, added chi2 computation
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parents: 29
diff changeset
593 #suite = doctest.DocTestSuite()
2
de5642925615 started implementation of TimeInterval and Spatio-temporal object
Nicolas Saunier <nicolas.saunier@polymtl.ca>
parents: 0
diff changeset
594 unittest.TextTestRunner().run(suite)
de5642925615 started implementation of TimeInterval and Spatio-temporal object
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parents: 0
diff changeset
595 #doctest.testmod()
0
aed8eb63cdde initial commit with non-functional python code for NGSIM
Nicolas Saunier <nico@confins.net>
parents:
diff changeset
596 #doctest.testfile("example.txt")