Change in custom norm colour map display #20581
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Release critical
For bugs that make the library unusable (segfaults, incorrect plots, etc) and major regressions.
topic: color/color & colormaps
topic: color/colorbar
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The tick moving to the middle is expected - colorbars are supposed to space equally in colourspace (i.e. consider log norm). The -1000 is more problematic, as that is simply incorrect I believe. Part of the issue here is that two-slope norm doesn't have a scale, and hence doesn't have good ticking. |
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... the Custom norm is in even worse shape ;-) |
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OK, the -1000 is because TwoSlopeNorm didn't extrapolate at all, and so -1000 == -500. Adding extrapolation fixes that. The |
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Compare https://matplotlib.org/stable/tutorials/colors/colormapnorms.html
vs https://matplotlib.org/devdocs/tutorials/colors/colormapnorms.html
The same thing happens with the custom norm at the end of the tutorial. I'm not sure about
TwoSlopeNorm, but at least for the custom one, the 0 is definitely not supposed to be in the middle. This half broke when merging #20054, with the 0 tick at the old place but the 0 colour in the middle. Then with d1c5a6a, the 0 tick also moved to the middle.The text was updated successfully, but these errors were encountered: