NonUniformImage: problem with axis reversal

Hi all,

I’ve been experimenting with the NonUniformImage class. (Actually I want uniform pixel spacing, but I want the image x and y coordinates to have the correct scaling in the style of Matlab’s image(x,y,C). The AxesImage class, created via pylab.imshow, didn’t seem to offer that, so I landed on NonUniformImage, but if there’s a better solution I’d be grateful for tips…)

And here’s the problem (or bug?): with my Python 2.5.4 and my matplotlib 1.0, I go and run the gallery demo but I decide that I want the y axis reversed (as is common in image visualization). So I either call pylab.gca().invert_yaxis() at the end, or I change one of the lines that says

to read
which I believe is the approved method. However the result I get is non-sensical: no more image variation in the vertical direction. Can anyone tell me what, if anything, I’m doing wrong? Grateful for any hints, --jez


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