Mercurial Hosting > traffic-intelligence
view python/processing.py @ 718:2cd245cb780d
added option to set low_memory = False for pandas.read_csv
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Thu, 30 Jul 2015 17:43:14 -0400 |
parents | 15e244d2a1b5 |
children | 933670761a57 |
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#! /usr/bin/env python '''Algorithms to process trajectories and moving objects''' import moving import numpy as np def extractSpeeds(objects, zone): speeds = {} objectsNotInZone = [] import matplotlib.nxutils as nx for o in objects: inPolygon = nx.points_inside_poly(o.getPositions().asArray().T, zone.T) if inPolygon.any(): objspeeds = [o.getVelocityAt(i).norm2() for i in xrange(int(o.length()-1)) if inPolygon[i]] speeds[o.num] = np.mean(objspeeds) # km/h else: objectsNotInZone.append(o) return speeds.values(), speeds, objectsNotInZone