python Programming Glossary: dotproduct

http://stackoverflow.com/questions/12435856/using-sin-1-or-inverse-sin-in-python

the following relation cos angle l1 dot l2 l1 l2 That is dotproduct l1x l2x l1y l2y lenproduct l1 l2 angle acos dotproduct lenproduct.. is dotproduct l1x l2x l1y l2y lenproduct l1 l2 angle acos dotproduct lenproduct where l1x l1y are the x y components of the line..

How can you determine a point is between two other points on a line segment?

http://stackoverflow.com/questions/328107/how-can-you-determine-a-point-is-between-two-other-points-on-a-line-segment

crossproduct epsilon return False # or 0 if using integers dotproduct c.x a.x b.x a.x c.y a.y b.y a.y if dotproduct 0 return False.. integers dotproduct c.x a.x b.x a.x c.y a.y b.y a.y if dotproduct 0 return False squaredlengthba b.x a.x b.x a.x b.y a.y b.y a.y.. False squaredlengthba b.x a.x b.x a.x b.y a.y b.y a.y if dotproduct squaredlengthba return False return True share improve this..

Setting local variables to a function instead of using globals optimize the function

http://stackoverflow.com/questions/6725223/setting-local-variables-to-a-function-instead-of-using-globals-optimize-the-func

for the itertools module I found this comment def dotproduct vec1 vec2 return sum imap operator.mul vec1 vec2 Note many of.. local variables defined as default values. For example the dotproduct recipe can be written as def dotproduct vec1 vec2 sum sum imap.. For example the dotproduct recipe can be written as def dotproduct vec1 vec2 sum sum imap imap mul operator.mul return sum imap..