Newbie question about numpy

[Gabriel Genellina]

At Thursday 24/8/2006 12:38, Paul Johnston wrote:

>from numpy  import *
>
>a = array([[1,2,3],[4,5,6],[1,2,3]])
>b = array([[1,3,6],[2,5,1],[1,1,1]])
>print "a * b is \n", a * b
>
>I know its a long time since my degree but that's not matrix
>multiplication is it ?

No, it's plain element-by-element multiplication.
You want matrixmultiply: 
http://numpy.scipy.org/numpydoc/numpy-9.html#pgfId-36542



Gabriel Genellina
Softlab SRL 


	
	
		
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