[SciPy-user] mean of arrays...

Alan G Isaac aisaac@american....
Thu Sep 6 09:09:27 CDT 2007


On Thu, 6 Sep 2007, Gary Pajer apparently wrote:
> Am I missing something here?  doesn't numpy.mean() find 
> the mean of all elements regardless of dimension? 

Right. The only thing you are missing is:
where in the conversation was it specified that
the OP wanted a mean along an axis rather than
the mean of all elements.  I missed it too, but
such seems to be the case.

Cheers,
Alan Isaac


>>> x
array([[[1, 1],
        [2, 2]],

       [[3, 3],
        [4, 4]]])
>>> x.shape
(2, 2, 2)
>>> x.mean()
2.5
>>> x.mean(-1)
array([[ 1.,  2.],
       [ 3.,  4.]])




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