[Matplotlib-users] quadmesh_demo question

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

In the quadmesh demo the shapes of the data(Z) and the 
coordinates(Qx,Qz) are exactly the same (n x n).
Now my understanding is that what is being plotted are values in a mesh 
which needs (n+1,n+1) vertices to describe it.

If I have a mesh of quadrilaterals defined by the vertices - how can 
pcolormesh plot this?

In collections.py the comments of QuadMesh appear to be addressing the 
description of the vertices, how is this used by pcolormesh?

It is very likely something very simple I am missing but I am at a loss 
at present.

--Jim