Mercurial Hosting > traffic-intelligence
annotate python/ubc_utils.py @ 61:a8c6d544f015
corrected bug loading Interactions
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Wed, 03 Nov 2010 22:51:38 -0400 |
parents | b8b3768f8d54 |
children | 290fceb125d2 |
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1 #! /usr/bin/env python |
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2 '''Various utilities to load data saved by the UBC tool(s)''' |
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3 |
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4 import utils |
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5 from moving import MovingObject, TimeInterval, Trajectory |
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6 |
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7 __metaclass__ = type |
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8 |
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9 userTypeNames = ['car', |
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10 'pedestrian', |
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11 'twowheels', |
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12 'bus' |
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13 'truck'] |
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14 |
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15 fileTypeNames = ['feature', |
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16 'object', |
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17 'prototype', |
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18 'contoursequence'] |
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19 |
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20 severityIndicatorNames = ['Distance', |
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21 'Cosine', |
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22 'Velocity Cosine', |
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23 'Speed Differential', |
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24 'Collision Probability', |
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25 'Severity Index', |
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26 'TTC'] |
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27 |
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28 # severityIndicator = {'Distance': 0, |
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29 # 'Cosine': 1, |
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30 # 'Velocity Cosine': 2, |
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31 # 'Speed Differential': 3, |
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32 # 'Collision Probability': 4, |
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33 # 'Severity Index': 5, |
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34 # 'TTC': 6} |
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35 |
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36 mostSevereIsMax = [False, |
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37 False, |
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38 True, |
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39 True, |
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40 True, |
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41 True, |
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42 False] |
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43 |
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44 ignoredValue = [None, None, None, None, None, None, -1] |
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45 |
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46 def getFileType(s): |
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47 'Finds the type in fileTypeNames' |
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48 for fileType in fileTypeNames: |
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49 if s.find(fileType)>0: |
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50 return fileType |
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51 return '' |
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52 |
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53 def isFileType(s, fileType): |
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54 return (s.find(fileType)>0) |
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55 |
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56 def saveTrajectoryUserTypes(inFilename, outFilename, objects): |
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57 '''The program saves the objects, |
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58 by just copying the corresponding trajectory and velocity data |
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59 from the inFilename, and saving the characteristics in objects (first line) |
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60 into outFilename''' |
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61 infile = utils.openCheck(inFilename) |
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62 outfile = utils.openCheck(outFilename,'w') |
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63 |
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64 if (inFilename.find('features') >= 0) or (not infile) or (not outfile): |
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65 return |
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66 |
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67 lines = utils.getLines(infile) |
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69 while lines != []: |
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71 i = 0 |
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72 while (i<len(objects)) and (objects[i].num != objNum): |
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73 i+=1 |
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75 if i<len(objects): |
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76 l = lines[0].split(' ') |
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77 l[3] = str(objects[i].userType) |
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78 outfile.write(' '.join(l)+'\n') |
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79 for l in lines[1:]: |
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80 outfile.write(l+'\n') |
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81 outfile.write(utils.delimiterChar+'\n') |
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82 # next object |
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83 objNum += 1 |
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84 lines = utils.getLines(infile) |
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85 |
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86 print('read {0} objects'.format(objNum)) |
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87 |
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88 def loadTrajectories(filename, nObjects = -1): |
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89 '''Loads trajectories''' |
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90 |
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91 file = utils.openCheck(filename) |
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92 if (not file): |
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93 return [] |
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94 |
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95 objects = [] |
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96 objNum = 0 |
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97 objectType = getFileType(filename) |
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98 lines = utils.getLines(file) |
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99 while (lines != []) and ((nObjects<0) or (objNum<nObjects)): |
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100 l = lines[0].split(' ') |
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101 parsedLine = [int(n) for n in l[:4]] |
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102 obj = MovingObject(num = objNum, timeInterval = TimeInterval(parsedLine[1],parsedLine[2])) |
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103 #add = True |
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104 if len(lines) >= 3: |
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105 obj.positions = Trajectory.load(lines[1], lines[2]) |
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106 if len(lines) >= 5: |
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107 obj.velocities = Trajectory.load(lines[3], lines[4]) |
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108 if objectType == 'object': |
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109 obj.userType = parsedLine[3] |
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110 obj.nObjects = float(l[4]) |
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111 obj.featureNumbers = [int(n) for n in l[5:]] |
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112 |
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113 # load contour data if available |
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114 if len(lines) >= 6: |
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115 obj.contourType = utils.line2Floats(lines[6]) |
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116 obj.contourOrigins = Trajectory.load(lines[7], lines[8]) |
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117 obj.contourSizes = Trajectory.load(lines[9], lines[10]) |
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118 elif objectType == 'prototype': |
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119 obj.userType = parsedLine[3] |
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120 obj.nMatchings = int(l[4]) |
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121 |
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122 if len(lines) != 2: |
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123 objects.append(obj) |
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124 objNum+=1 |
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125 else: |
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126 print("Error two lines of data for feature %d"%(f.num)) |
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127 |
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128 lines = utils.getLines(file) |
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129 |
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130 file.close() |
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131 return objects |
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132 |
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133 def loadInteractions(filename, nInteractions = -1): |
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134 'Loads interactions from the old UBC traffic event format' |
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135 from event import Interaction |
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136 from moving import SeverityIndicator |
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137 file = utils.openCheck(filename) |
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138 if (not file): |
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139 return [] |
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140 |
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141 interactions = [] |
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142 interactionNum = 0 |
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143 lines = utils.getLines(file) |
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144 while (lines != []) and ((nInteractions<0) or (interactionNum<nInteractions)): |
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145 parsedLine = [int(n) for n in lines[0].split(' ')] |
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146 inter = Interaction(interactionNum, TimeInterval(parsedLine[1],parsedLine[2]), parsedLine[3], parsedLine[4], categoryNum = parsedLine[5]) |
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147 |
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148 indicatorFrameNums = [int(n) for n in lines[1].split(' ')] |
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149 indicators = [] |
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150 for indicatorNum,line in enumerate(lines[2:]): |
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151 values = {} |
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152 for i,v in enumerate([float(n) for n in line.split(' ')]): |
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153 values[indicatorFrameNums[i]] = v |
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154 indicators.append(SeverityIndicator(severityIndicatorNames[indicatorNum], values, mostSevereIsMax[indicatorNum], ignoredValue[indicatorNum])) |
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155 inter.indicators = indicators |
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156 |
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157 interactions.append(inter) |
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158 interactionNum+=1 |
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159 lines = utils.getLines(file) |
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160 |
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161 file.close() |
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162 return interactions |
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163 |
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164 def loadCollisionPoints(filename, nPoints = -1): |
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165 '''Loads collision points and returns a dict |
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166 with keys as a pair of the numbers of the two interacting objects''' |
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167 file = utils.openCheck(filename) |
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168 if (not file): |
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169 return [] |
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170 |
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171 points = {} |
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172 num = 0 |
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173 lines = utils.getLines(file) |
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174 while (lines != []) and ((nPoints<0) or (num<nPoints)): |
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175 parsedLine = [int(n) for n in lines[0].split(' ')] |
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176 protagonistNums = (parsedLine[0], parsedLine[1]) |
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177 points[protagonistNums] = [[float(n) for n in lines[1].split(' ')], |
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178 [float(n) for n in lines[2].split(' ')]] |
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179 |
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180 num+=1 |
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181 lines = utils.getLines(file) |
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182 |
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183 file.close() |
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184 return points |