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comparison python/moving.py @ 377:2aed569f39e7

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added utils
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Thu, 18 Jul 2013 02:08:51 -0400
parents 349eb1e09f45
children 3805b9639647
comparison
equal deleted inserted replaced
376:2e6b8610bcaa 377:2aed569f39e7
685 self.positions.drawOnWorldImage(nPixelsPerUnitDistance, imageHeight, options, withOrigin, timeStep, **kwargs) 685 self.positions.drawOnWorldImage(nPixelsPerUnitDistance, imageHeight, options, withOrigin, timeStep, **kwargs)
686 686
687 def play(self, videoFilename, homography = None): 687 def play(self, videoFilename, homography = None):
688 cvutils.displayTrajectories(videoFilename, [self], homography, self.getFirstInstant(), self.getLastInstant()) 688 cvutils.displayTrajectories(videoFilename, [self], homography, self.getFirstInstant(), self.getLastInstant())
689 689
690 def speedDiagnostics(self, display = False):
691 from numpy import std
692 speeds = self.getSpeeds()
693 coef = utils.linearRegression(range(len(speeds)), speeds)
694 print(speeds[-2]-speeds[1], std(speeds), coef[0])
695 if display:
696 from matplotlib.pyplot import figure, plot
697 figure(1)
698 self.draw()
699 figure(2)
700 plot(list(self.getTimeInterval()), speeds)
701
690 def getInstantsCrossingLane(self, p1, p2): 702 def getInstantsCrossingLane(self, p1, p2):
691 '''Returns the instant(s) 703 '''Returns the instant(s)
692 at which the object passes from one side of the segment to the other 704 at which the object passes from one side of the segment to the other
693 empty list if there is no crossing''' 705 empty list if there is no crossing'''
694 indices = self.positions.getIntersections(p1, p2) 706 indices = self.positions.getIntersections(p1, p2)