[Numpy-discussion] still no cross product for new array type

Gary Ruben gruben at bigpond.net.au
Fri Aug 12 17:45:31 CDT 2005


"Usually" means that that's where they are now, because they haven't 
been implemented in numpy. Comparing with Matlab/IDL where their status 
is slightly greater so as to earn operations of their own, I wonder why 
equivalent status isn't afforded them in numpy.

Gary R.

Nadav Horesh wrote:
> Usually this is within the scope of higher level packages such as ScientificPython.
> 
>   Nadav
> 
> -----Original Message-----
> From:	numpy-discussion-admin at lists.sourceforge.net on behalf of Gary Ruben
> Sent:	Fri 12-Aug-05 14:44
> To:	numpy-discussion at lists.sourceforge.net
> Cc:	
> Subject:	[Numpy-discussion] still no cross product for new array type
> Just browsing through the new array PEP to see if there's support for 
> 3-vector operations, such as cross product, norm, length functions. 
> Sadly I don't see any. It's something I think is lacking from Numeric 
> and numarray and would like to see implemented. Is it a deliberate 
> choice not to include any? I understand that vectors are sufficiently 
> different animals that you could argue that they shouldn't be supported. 
> I use them enough to think that they should be.
> 
> Gary Ruben




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