Mercurial Hosting > traffic-intelligence
view python/processing.py @ 286:fa95796a76b3
simplified indicators (only non-measured values, whether measurable or not)
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Sun, 27 Jan 2013 00:22:55 -0500 |
parents | 583a2c4622f9 |
children | 15e244d2a1b5 |
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#! /usr/bin/env python '''Algorithms to process trajectories and moving objects''' __metaclass__ = type import numpy as np import moving 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