Mercurial > hg > nsaunier > traffic-intelligence

comparison python/utils.py @ 698:8d99a9e16644 dev

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added clarification comments
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 17 Jul 2015 14:28:14 -0400
parents 9990ef119bce
children c35e4a4b199d
comparison
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697:0421a5a0072c 698:8d99a9e16644
238 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3''' 238 eg 1.23 at 0 decimal is 2, at 1 decimal is 1.3'''
239 tens = 10**nDecimals 239 tens = 10**nDecimals
240 return ceil(v*tens)/tens 240 return ceil(v*tens)/tens
241 241
242 def inBetween(bound1, bound2, x): 242 def inBetween(bound1, bound2, x):
243 'useful if one does not know the order of bound1/bound2'
243 return bound1 <= x <= bound2 or bound2 <= x <= bound1 244 return bound1 <= x <= bound2 or bound2 <= x <= bound1
244 245
245 def pointDistanceL2(x1,y1,x2,y2): 246 def pointDistanceL2(x1,y1,x2,y2):
246 ''' Compute point-to-point distance (L2 norm, ie Euclidean distance)''' 247 ''' Compute point-to-point distance (L2 norm, ie Euclidean distance)'''
247 return sqrt((x2-x1)**2+(y2-y1)**2) 248 return sqrt((x2-x1)**2+(y2-y1)**2)