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comparison python/utils.py @ 569:0057c04f94d5

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work in progress on intersections (for PET)
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Wed, 06 Aug 2014 17:53:38 -0400
parents ee45c6eb6d49
children e24eeb244698
comparison
equal deleted inserted replaced
567:072cedc3f33d 569:0057c04f94d5
2 ''' Generic utilities.''' 2 ''' Generic utilities.'''
3 3
4 #from numpy import * 4 #from numpy import *
5 #from pylab import * 5 #from pylab import *
6 from datetime import time, datetime 6 from datetime import time, datetime
7 from math import sqrt
7 8
8 __metaclass__ = type 9 __metaclass__ = type
9 10
10 datetimeFormat = "%Y-%m-%d %H:%M:%S" 11 datetimeFormat = "%Y-%m-%d %H:%M:%S"
11 12
239 from math import ceil,pow 240 from math import ceil,pow
240 tens = pow(10,nDecimals) 241 tens = pow(10,nDecimals)
241 return ceil(v*tens)/tens 242 return ceil(v*tens)/tens
242 243
243 def inBetween(bound1, bound2, x): 244 def inBetween(bound1, bound2, x):
244 return bound1 <= x <= bound2 or bound2 <= x<= bound1 245 return bound1 <= x <= bound2 or bound2 <= x <= bound1
246
247 def pointDistanceL2(x1,y1,x2,y2):
248 ''' Compute point-to-point distance (L2 norm, ie Euclidean distance)'''
249 return sqrt((x2-x1)**2+(y2-y1)**2)
245 250
246 def crossProduct(l1, l2): 251 def crossProduct(l1, l2):
247 return l1[0]*l2[1]-l1[1]*l2[0] 252 return l1[0]*l2[1]-l1[1]*l2[0]
248 253
249 def filterMovingWindow(inputSignal, halfWidth): 254 def filterMovingWindow(inputSignal, halfWidth):