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Fix hexbin marginals and log scaling #21039

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Merged
merged 2 commits into from
Sep 24, 2021

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dstansby
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@dstansby dstansby commented Sep 10, 2021

PR Summary

This cleans up and fixes hexbin marginals. In particular:

  • Previously the marginal bins were displaced 1 too far to the right/up (see below)
  • Fixed marginals on log scales (see test image)

Also don't add 1 to log-scaled bins (originally in #21038).

Current master:
hexbin_broken

With this PR:
hexbin_fixed

PR Checklist

  • Has pytest style unit tests (and pytest passes).
  • Is Flake 8 compliant (run flake8 on changed files to check).
  • New features are documented, with examples if plot related.
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).
  • Conforms to Matplotlib style conventions (install flake8-docstrings and run flake8 --docstring-convention=all).
  • New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
  • API changes documented in doc/api/next_api_changes/ (follow instructions in README.rst there).

@dstansby dstansby changed the title Hexbin marginal Hexbin fixes Sep 10, 2021
@dstansby dstansby changed the title Hexbin fixes Fix hexbin marginals and log scaling Sep 12, 2021
@@ -781,7 +781,8 @@ def test_hexbin_log():
y = np.power(2, y * 0.5)

fig, ax = plt.subplots()
h = ax.hexbin(x, y, yscale='log', bins='log')
h = ax.hexbin(x, y, yscale='log', bins='log',
marginals=True, reduce_C_function=np.sum)
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looks like there is no linear scale marginals=True? Can we add that test?

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I think this should be in 3.5 so lets merge. My request for a test can be dealt with later...

@jklymak jklymak merged commit 7c2a3c4 into matplotlib:master Sep 24, 2021
@jklymak jklymak added this to the v3.5.0 milestone Sep 24, 2021
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jklymak commented Sep 24, 2021

@meeseeksdev backport to v3.5.x

meeseeksmachine pushed a commit to meeseeksmachine/matplotlib that referenced this pull request Sep 24, 2021
@dstansby dstansby deleted the hexbin-marginal branch September 24, 2021 09:30
tacaswell pushed a commit to tacaswell/matplotlib that referenced this pull request Oct 12, 2021
tacaswell pushed a commit that referenced this pull request Oct 20, 2021
Fix `hexbin` marginals and log scaling
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4 participants