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annotate tvii/distance.py @ 81:990a27e125f2

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add distance norm function
author Jeff Hammel <k0scist@gmail.com>
date Sun, 17 Dec 2017 13:44:37 -0800
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81
990a27e125f2 add distance norm function
Jeff Hammel <k0scist@gmail.com>
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1 """
990a27e125f2 add distance norm function
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2 distance functions; really the `N` norm
990a27e125f2 add distance norm function
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3 """
990a27e125f2 add distance norm function
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4
990a27e125f2 add distance norm function
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5 def distance(x, y, N=2):
990a27e125f2 add distance norm function
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6 assert len(x) == len(y)
990a27e125f2 add distance norm function
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7 return sum([(_x - _y)**N
990a27e125f2 add distance norm function
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8 for _x, _y in zip(x, y)])**(1./N)