[Numpy-discussion] permutation and array subsets

Scott Ransom ransom at cfa.harvard.edu
Tue Aug 7 23:46:41 CDT 2001


Serge Rey wrote:
>
> i'm trying to use the results of permutation (from RandomArray.py) to
> reorder the rows of an array:
> 
> >>> r=arange(20)
> >>> id=permutation(20)
> >>> y=r[id]

Try:

y = take(r, permutation(len(r)))

Scott

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Scott M. Ransom                   Address:  Harvard-Smithsonian CfA
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