[Numpy-discussion] point line distance

[Ian Mallett]

Hi,

A background in linear algebra helps.  I just came up with this method
(which, because I thought of it 5 seconds ago, I don't know if it works):

Line p1, p2
Point v

costheta = normalize(p2-p1) dot normalize(v-p1)
dist = length(v-p1)*sin(acos(costheta)

Ian
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.scipy.org/pipermail/numpy-discussion/attachments/20101006/5e9f9290/attachment-0002.html