8000 [Doc]: `ContourSet` `allsegs` and `allkinds` after #25247 · Issue #26863 · matplotlib/matplotlib · GitHub
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[Doc]: ContourSet allsegs and allkinds after #25247 #26863
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[Doc]: ContourSet allsegs and allkinds after #25247#26863
#26908
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Release criticalFor bugs that make the library unusable (segfaults, incorrect plots, etc) and major regressions.topic: contour
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v3.8.1
@zmoon

Description

@zmoon
zmoon
opened on Sep 21, 2023

Documentation Link

https://matplotlib.org/stable/api/contour_api.html

Problem

It seems that their descriptions are no longer accurate after #25247.

For example

matplotlib/lib/matplotlib/contour.py

Lines 719 to 726 in dceb278

allsegs : [level0segs, level1segs, ...]
List of all the polygon segments for all the *levels*.
For contour lines ``len(allsegs) == len(levels)``, and for
filled contour regions ``len(allsegs) = len(levels)-1``. The lists
should look like ::
level0segs = [polygon0, polygon1, ...]
polygon0 = [[x0, y0], [x1, y1], ...]

Now, level0segs (.allsegs[0]) is just path0 (single Nx2 array of vertices for all contours for level 0), not [polygon0, polygon1, ...].

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