[Numpy-discussion] vector cross product

Gary Ruben gazzar at email.com
Tue Nov 2 18:37:09 CST 2004

I guess from the lack of enthusiastic responses that there aren't many out there who think this is of interest. So, perhaps Todd could just add it to the bottom of the list of possible ideas I imagine he maintains, so that if it comes up again in the future, it is at least noted.

----- Original Message -----
From: "Gary Ruben" <gazzar at email.com>
To: numpy-discussion at lists.sourceforge.net
Subject: [Numpy-discussion] vector cross product
Date: Sun, 31 Oct 2004 22:18:56 +1000

> Not that I have a really urgent need, but is there a reason that nice, fast C-based vector operations aren't implemented in Numeric or numarray? I notice Fernando Perez has a cross product as a useful SciPy weave example on his site. I've also seen comments elsewhere about Numpy's lack of a cross product. eg. <http://mail.python.org/pipermail/python-list/2004-March/213878.html>
> I'm using Konrad Hinsen's Scientific Python for the convenience value of his Vector class, which also provides a nice angle() method but it bothers me that it's implemented in native Python. The Vector type in vpython probably does it 'properly', but I don't use it just for the convenience since it adds an extra dependency to my code.
> comments?
> Gary R.

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