Re: [Matplotlib-users] Turn off shading in ax.bar3d

[Benjamin R. <ben...@ou...>]

On Fri, Aug 9, 2013 at 6:57 AM, SquirrelSeq
<ral...@un...>wrote:

> Hello everybody,
>
> I created 3D-Plots with 3D bars in matplotlib. The bars are colored
> according to a colormap.
>
> Unfortunately, only vertical faces have the desired bright colors, whereas
> the top sides of the bars are shaded darker to make it look more 3D.
>
> This makes the colors a lot more difficult to see, depending on the
> perspective.
>
> What can I do in order to switch of shading or to add an ambivalent light
> source?
>
> Best regards
> SquirrelSeq
>
> <http://matplotlib.1069221.n5.nabble.com/file/n41766/overlap_heatmap.png>
>
>
The one way to do it is to patch the source code in the following way.

in mpl_toolkits/mplot3d/axes3d.py, at around line 2355, replace the line:

sfacecolors = self._shade_colors(facecolors, normals)

with

sfacecolors = facecolors

Could you file a github issue requesting a keyword argument to turn this
on/off?

Cheers!
Ben Root