[Numpy-discussion] largest matrix element

[Scott Ransom]

Charles G Waldman wrote:
> 
> nils.wagner at freenet.de writes:
>  > Given a complex Matrix A(m,n)
>  > How can I get the absolute value of the largest matrix element
>  > very efficiently ?
> 
> How about
> 
>   sqrt(max((asarray(A)*conjugate(asarray(A))).real))

I if you want the global maximum you need a ravel in there:

sqrt(max(ravel((asarray(a)*conjugate(asarray(a))).real)))

Scott

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Scott M. Ransom                   Address:  Harvard-Smithsonian CfA
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