[Numpy-discussion] Is this a bug in numpy.ma.reduce?

Pierre GM pgmdevlist at gmail.com
Fri Mar 5 05:51:38 EST 2010

On Mar 5, 2010, at 4:38 AM, David Goldsmith wrote:
> Hi!  Sorry for the cross-post, but my own investigation has led me to suspect that mine is actually a numpy problem, not a matplotlib problem.  I'm getting the following traceback from a call to matplotlib.imshow:
> ...
> Based on examination of the code, the last self is an instance of ma._extrema_operation (or one of its subclasses) - is there a reason why this class is unable to deal with a "zero-size array to ufunc.reduce without identity," (i.e., was it thought that it would - or should - never get one) or was this merely an oversight?  Either way, there's other instances on the lists of this error cropping up, so this circumstance should probably be handled more robustly.  In the meantime, workaround?

'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...

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