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Re: numpy array operation

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C. Ng wrote:

> Is there a numpy operation that does the following to the array?
> 
> 1 2  ==>  4 3
> 3 4       2 1

How about

>>> a
array([[1, 2],
       [3, 4]])
>>> a[::-1].transpose()[::-1].transpose()
array([[4, 3],
       [2, 1]])

Or did you mean

>>> a.reshape((4,))[::-1].reshape((2,2))
array([[4, 3],
       [2, 1]])

Or even

>>> -a + 5
array([[4, 3],
       [2, 1]])

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numpy array operation "C. Ng" <ngcbmy@gmail.com> - 2013-01-29 00:41 -0800
  Re: numpy array operation Peter Otten <__peter__@web.de> - 2013-01-29 10:28 +0100
  Re: numpy array operation Tim Williams <tjandacw@cox.net> - 2013-01-29 04:59 -0800
  Re: numpy array operation Alok Singhal <as8ca@virginia.edu> - 2013-01-29 18:49 +0000
    Re: numpy array operation Terry Reedy <tjreedy@udel.edu> - 2013-01-29 15:05 -0500

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