[Numpy-discussion] defmatrix.py

Sven Schreiber svetosch@gmx....
Tue Mar 27 07:00:51 CDT 2007


Travis Oliphant schrieb:

> O.K.  So, the problem is that when I defined matrix multiplication, I 
> mistakenly believed that dot always interpreted 1-d arrays as row 
> vectors which it is now clear it doesn't.
> 
> I think this led to the issues. 
> 
> So, making dot always return arrays seems like the needed fix.
> 

Does that mean that...

a) dot(a,b) will return an array even if a and b are both numpy-matrices?

and/or

b) dot(c,d) will return an array if c or d is a numpy-matrix?

Thanks for any clarifications,

Sven


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