[Numpy-discussion] Is this a bug in numpy.ma.reduce?
Friedrich Romstedt
friedrichromstedt@gmail....
Sun Mar 7 06:41:27 CST 2010
2010/3/5 Pierre GM <pgmdevlist@gmail.com>:
> 'm'fraid no. I gonna have to investigate that. Please open a ticket with a self-contained example that reproduces the issue.
> Thx in advance...
> P.
I would like to stress the fact that imo this is maybe not ticket and not a bug.
The issue arises when calling a.max() or similar of empty arrays a, i.e., with:
>>> 0 in a.shape
True
Opposed to the .prod() of an empty array, such a .max() or .min()
cannot be defined, because the set is empty. So it's fully correct to
let such calls fail. Just the failure is a bit deep in numpy, and
only the traceback gives some hint what went wrong.
I posted something similar also on the matplotlib-users list, sorry
for cross-posting thus.
fwiw,
Friedrich
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