Mercurial Hosting > traffic-intelligence

comparison python/moving.py @ 327:42f2b46ec210

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
added class for trajectories in curvilinear coordinates
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 12 Jun 2013 17:28:34 -0400
parents 82a8fba99bec
children a70c205ebdd9
comparison
equal deleted inserted replaced
326:f7872d15a6cc 327:42f2b46ec210
337 '''Class for trajectories: temporal sequence of positions 337 '''Class for trajectories: temporal sequence of positions
338 338
339 The class is iterable''' 339 The class is iterable'''
340 340
341 def __init__(self, positions=None): 341 def __init__(self, positions=None):
342 if positions != None: 342 if positions:
343 self.positions = positions 343 self.positions = positions
344 else: 344 else:
345 self.positions = [[],[]] 345 self.positions = [[],[]]
346 346
347 @staticmethod 347 @staticmethod
354 t = Trajectory() 354 t = Trajectory()
355 for p in points: 355 for p in points:
356 t.addPosition(p) 356 t.addPosition(p)
357 return t 357 return t
358 358
359 def __len__(self):
360 return len(self.positions[0])
361
362 def length(self):
363 return self.__len__()
364
359 def __str__(self): 365 def __str__(self):
360 return ' '.join([self.__getitem__(i).__str__() for i in xrange(self.length())]) 366 return ' '.join([self.__getitem__(i).__str__() for i in xrange(self.length())])
361 367
362 def __repr__(self): 368 def __repr__(self):
363 return str(self) 369 return str(self)
374 raise StopIteration 380 raise StopIteration
375 else: 381 else:
376 self.iterInstantNum += 1 382 self.iterInstantNum += 1
377 return self[self.iterInstantNum-1] 383 return self[self.iterInstantNum-1]
378 384
379 def length(self): 385 def setPositionXY(self, i, x, y):
380 return len(self.positions[0]) 386 if i < self.__len__():
381 387 self.positions[0][i] = x
382 def __len__(self): 388 self.positions[1][i] = y
383 return self.length() 389
390 def setPosition(self, i, p):
391 self.setPositionXY(i, p.x, p.y)
384 392
385 def addPositionXY(self, x, y): 393 def addPositionXY(self, x, y):
386 self.positions[0].append(x) 394 self.positions[0].append(x)
387 self.positions[1].append(y) 395 self.positions[1].append(y)
388 396
513 return utils.LCSS(t1, t2, threshold, Point.distanceNorm2) 521 return utils.LCSS(t1, t2, threshold, Point.distanceNorm2)
514 522
515 @staticmethod 523 @staticmethod
516 def normMaxLCSS(t1, t2, threshold): 524 def normMaxLCSS(t1, t2, threshold):
517 return utils.LCSS(t1, t2, threshold, lambda p1, p2: (p1-p2).normMax()) 525 return utils.LCSS(t1, t2, threshold, lambda p1, p2: (p1-p2).normMax())
526
527 class CurvilinearTrajectory(Trajectory):
528 '''Sub class of trajectory for trajectories with curvilinear coordinates and lane assignements
529 longitudinal coordinate is stored as first coordinate (exterior name S)
530 lateral coordiante is stored as second coordinate'''
531
532 def __init__(self, S = [], Y = [], lanes = []):
533 self.positions = [S,Y]
534 self.lanes = lanes
535
536 def __getitem__(self,i):
537 return [self.positions[0][i], self.positions[1][i], self.lanes[i]]
538
539 def getSCoordinates(self):
540 return self.getXCoordinates()
541
542 def getLanes(self):
543 return self.lanes
544
545 def addPosition(self, s, y, lane):
546 self.addPositionXY(s,y)
547 self.lanes.append(lane)
548
549 def setPosition(self, i, s, y, lane):
550 self.setPositionXY(i, s, y)
551 if i < self.__len__():
552 self.lanes[i] = lane
518 553
519 ################## 554 ##################
520 # Moving Objects 555 # Moving Objects
521 ################## 556 ##################
522 557