sorting arrays in numpy by column

Posted by user248237 on Stack Overflow See other posts from Stack Overflow or by user248237
Published on 2010-05-13T15:32:57Z Indexed on 2010/05/13 16:14 UTC
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numpy

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scipy

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python

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sorting

How can I sort an array in numpy by the nth column? e.g.

a = array([[1,2,3],[4,5,6],[0,0,1]])

I'd like to sort by the second column, such that I get back:

array([[0,0,1],[1,2,3],[4,5,6]])

thanks.

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