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distance between two vertices

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lina it
lina it 2012-4-19
How I can compute the distance between two vertices (point)
vertex1 = (x,y,z) vertex2 = (x,y,z)

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回答（2 个）

Andrei Bobrov
Andrei Bobrov 2012-4-19
Pythagorean
d = sqrt(sum((vertex1-vertex2).^2))
hypot()
k = vertex1-vertex2;
d = hypot(hypot(k(1),k(2)),k(3));
use norm()
d = norm(vertex1-vertex2,2);
use dist from Neural Network Toolbox
d = dist([vertex1;vertex2]')
use pdist from Statistics Toolbox
d = pdist([vertex1;vertex2])
  1 个评论
Jan
Jan 2012-4-19
Sometimes this is fast for row vectors: v = vertex1 - vertex2; d = sqrt(v * v');

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Image Analyst
Image Analyst 2012-4-19
Wouldn't the Pythagorean theorem or hypot() work?

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