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Fix colorbar test and color level determination for contour - #8737
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@efiring has to sign off on this before it gets merged. |
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(fixes #7334 if what I've done is correct) |
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thanks! |
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test_given_colors_levels_and_extends()is failing with numpy 1.13, and I think the failure exposes a wider problem with contour colours.If plotting a non-filled contour, the number of colours needed is the same as the number of levels regardless of whether the colorbar is extended or not. This is why the indices
i0andi1are now only modified ifself.filledisTrueinlib/matplotlib/contour.py.If plotting a filled contour, the number of colours depends on whether the colorbar is extended or not. This is dealt with by the logic that I've added a tab to in
lib/matplotlib/contour.pyI have also changed the test, so that the colour of each filled level/contour level is the same across the images.
Finally, I think that there should probably be a check for the correct length of the
colorskwarg that throws a sensible error message if it is wrong. Currently (starting with numpy 1.13) a cryptic index error will be raised (see https://travis-ci.org/matplotlib/matplotlib/jobs/241271218#L1767)