[Numpy-discussion] Fromfunction generalization

lorenzo bolla lbolla@gmail....
Tue Apr 22 13:50:53 CDT 2008


what about using lambda functions?

M=fromfunction(lambda i,j:f(i,j,5),(1000,1000))
P=fromfunction(lambda i,j:f(i,j,7),(1000,1000))

L.

On Tue, Apr 22, 2008 at 8:42 PM, Gnata Xavier <xavier.gnata@gmail.com>
wrote:

> Hi,
>
> fromfunction is fine but I have like to be able to create 2Darrays using
> a function of i,j but also of one (or more) parameters.
> Something like that :
>
> def f(i,j,a):
>    return (i+j)*a #replace that by another non trivial computation
>
> M=fromfunction(f( hum well something like i,j,a),(1000,1000))
>
> this only way I know is to use global :
>
> a=5
>
> def f(i,j):
>    global a
>    return (i+j)*a
>
> M=fromfunction(f,(1000,1000))
> a=7
> P=fromfunction(f,(1000,1000))
>
> but it is quite ugly :(
>
> Is there a clean and *fast* way to do that ?
>
> Xavier
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>



-- 
Lorenzo Bolla
lbolla@gmail.com
http://lorenzobolla.emurse.com/
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