matrix multiplication (newbie question)

Stefan van der Walt stefan at sun.ac.za
Wed Nov 8 08:38:27 CST 2006


On Wed, Nov 08, 2006 at 05:54:17AM -0800, izak marais wrote:
> Hi
> 
> Sorry if this is an obvious question, but what is the easiest way to multiply
> matrices in numpy? Suppose I want to do A=B*C*D. The ' * ' operator apparently
> does element wise multiplication, as does the 'multiply' ufunc. All I could
> find was the numeric function 'matrix_multiply, but this only takes two
> arguments.

You can also do N.dot(B, N.dot(C,D)).

Cheers
Stéfan



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