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ddale

opened on Jun 20, 2011

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Original report at SourceForge, opened Thu Dec 31 13:32:15 2009

For bar3d(), overlapping for the bars can be wrong from certain views. Attached is an example of the problem using hist3d_demo.py

SourceForge History

• On Thu Jun 3 15:28:02 2010, by efiring: assigned_to: 100
• On Thu Dec 31 13:32:15 2009, by nhmc: File Added: 357273: hist3d_bug.png

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1. WeatherGod commented on Jun 22, 2011

   

   WeatherGod

   on Jun 22, 2011

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   This is the well-known "stacking problem" that mplot3d has. It is caused by the reduction in data from 3d to 2d as the plot is rendered by the layering engine of matplotlib. Each 3d collection is represented by a single depth value, and so in mixed environments, layering can be wrong.

   There may be some ways to improve this, but it is an intractable problem due to the design of the core of matplotlib. Until we have an OpenGL backend and some other significant changes to the transforms framework, this can not be completely solved, only mitigated.
2. WeatherGod

   closed this as completedon Jun 22, 2011
3. gdementen

   added a commit that references this issue on Dec 12, 2013

   * removed stacked 3d bar charts

   9b98b38
4. timhoffm

   added

   status: won't or can't fix

   on Jan 9, 2022
5. timhoffm commented on Jan 9, 2022

   

   timhoffm

   on Jan 9, 2022

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   See also #13580.

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