[Matplotlib-users] colorbar for figure not mappable - zap edge lines

[James B. <bo...@ll...>]

I have a mesh of irregular polygons, like a finite element mesh. Each 
polygon has an associated value.
So, I have defined a color map with a appropriate normalization to 
define a color for each value and then
built a collection consisting of the polygon vertices and colors.
The resulting plot looks pretty good. This technique would seem to be 
useful for FE grids and Delaunay triangles.

Two questions:
(1) I want to attach a colorbar to the figure, but as of yet I have not 
worked out how to do it.
images such as scatter, imshow, pcolor are mappable and will accept a 
color bar but my simple polygon fill will not.

(2) How do I eliminate the edge lines about each polygon? I can make 
them very thin but a width of zero does not appear to work.
I recall this being discussed on the list, but now I cannot find the 
reference.

Thanks for any help.

--Jim