Suggested simple enhancement for coloring the surface in mpl_toolkits/mplot3d/axes3d.py

[keithbriggs]

This line:

avg_z = np.array([ps[:, 2].mean() for ps in polys])

means that coloring the surface is only possibly with the z coordinate.

It would be very useful to allow an arbitrary function of ps here.

[timhoffm]

This is just the default. Use facecolors to supply arbitrary colors. See also:

https://matplotlib.org/gallery/mplot3d/custom_shaded_3d_surface.html#sphx-glr-gallery-mplot3d-custom-shaded-3d-surface-py

[QuLogic]

It seems like there's nothing to be done here?

[ImportanceOfBeingErnest]

Maybe the point is, that unless you use cstride=rstride=1, you will not know the polygons in advance, so it might be hard to supply facecolors? Hence, it might be useful to allow for functions other than .mean().

[keithbriggs]

Yes, if I remember correctly, there was this point, and also that you might want to color with ps[:,0], or some other function of ps.

[QuLogic]

OK, let's reopen for now. There is some chance that if performance is improved sufficiently, then rstride and cstride would no longer be needed.

[github-actions]

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