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[Doc]: Left Ventricle Bullseye example unexpected output regression #24771
Description
Documentation Link
https://matplotlib.org/stable/gallery/specialty_plots/leftventricle_bulleye.html
Problem
The Left Ventricle bullseye example has an unexpected output in which the area shaded is not aligned with the border. This is not the case in the 3.1.1 docs.
Current Doc output.
3.1.1 doc output. https://matplotlib.org/3.1.1/gallery/specialty_plots/leftventricle_bulleye.html
Suggested improvement
I managed to "fix" the sample code for my use but I feel there is a bug related to the functions used in the example. I'm not too familiar with the APIs and the data projection to polar coordinates so I feel it's better for someone more familiar to explain what happened here.
Might be related to this issue too: #16029
Activity
oscargus commented on Dec 19, 2022
This seems to have changed between 3.2 and 3.3.
My guess is shading='auto' was introduced there, which most likely selects nearest based on the outcome of the figures. It should use flat, but just changing to flat leads to: