David Huard wrote:
> Hi,
>
> Is there an elegant way to reduce an array but conserve the reduced
> dimension ?
>
> Currently,
> >>> a = random.random((10,10,10))
> >>> a.sum(1).shape
> (10,10)
>
> but i'd like to keep (10,1,10) so I can do a/a.sum(1) directly.
def nonreducing_reducer(reducing_func, arr, axis):
reduced = reducing_func(arr, axis=axis)
shape = list(reduced.shape)
axis = axis % len(arr.shape)
shape.insert(axis, 1)
reduced.shape = tuple(shape)
return reduced
I think.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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