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scatter plotting tests fail for recent matplotlib version

See original GitHub issue

With matplotlib version 3.1.1 installed, some pyam plotting tests fail. More specifically, test_scatter, test_scatter_variables_with_meta_color, test_scatter_with_lines, and test_scatter_meta fail, because of IndexError: list index our of range, pyam\plotting.py:605 when:

pyam\core.py:1293: in scatter
    ax = plotting.scatter(df.dropna(), x, y, **kwargs)
pyam\plotting.py:605: in scatter
    handles = [handles[i] for i in idxs]

With matplotlib version 3.0.2 all of the aforementioned tests pass.

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

awais307commented, Jan 29, 2020

The pyam requirement for an outdated (3.0.2) version of matplotlib is causing difficulties on my system, where another code requires the latest matplotlib. So I am forced to have two conda environments; one for any code using pyam and other one requiring latest matplotlib version.

0reactions

znichollscommented, May 11, 2020

IMHO, the actual fix should be to adjust pyam to work properly with the latest matplotlib; not to force any other software using pyam to run an outdated matplotlib.

Although I fully agree with this (but acknowledge that anything to do with plotting and plotting tests is super hard).

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