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categorical axis sorts its keys #9312

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anntzer opened this issue Oct 8, 2017 · 1 comment
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categorical axis sorts its keys #9312

anntzer opened this issue Oct 8, 2017 · 1 comment
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topic: categorical

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@anntzer
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anntzer commented Oct 8, 2017

Bug report

Bug summary

Categorical (i.e. string) xdata inputs get sorted before plotting.

Code for reproduction

plt.bar(["b", "a", "c"], [2, 1, 3])

Actual outcome

Bars appear in the order "a", "b", "c".

Expected outcome

Bars appear in the order of the input, so "b", "a", "c".

Matplotlib version

  • Operating system: Arch Linux
  • Matplotlib version: 2.1
  • Matplotlib backend (print(matplotlib.get_backend())): qt5agg
  • Python version: 3.6
  • Jupyter version (if applicable):
  • Other libraries:
@anntzer anntzer mentioned this issue Oct 8, 2017
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@story645 story645 mentioned this issue Nov 14, 2017
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@story645
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closed by #9783 though the jpl implementation of strconvertor has me thinking we should support sorted and unsorted by stashing the info in the plot kwarg arg and as an attribute on unitdata.

This was referenced Mar 10, 2019
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hfswetton added a commit to hfswetton/vcs-automat-misc that referenced this issue Nov 9, 2021
@hfswetton
Stop weekday plot being sorted alphabetically
b349abf 
Add lines 104/106 & edit line 105 to first plot each weekday as a number and then overwrite with the actual day. Prevents the weekdays being sorted alphabetically due to this bug in Matplotlib < 2.2.0: matplotlib/matplotlib#9312
@hfswetton hfswetton mentioned this issue Nov 9, 2021
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