James Boyle wrote:
> 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
Jim,
I think that all the pcolortype functions and methods simply throw away
the last row and column of Z. This behavior is inherited from Matlab.
Perhaps it could be clarified (made explicit) in the documentation. I
would also be inclined to make these functions accept a Z with
dimensions (m1, n1) for a grid with dimensions (m,n). It is silly to
have to tack on an extra dummy row and column just to be able to use all
the values in a Z array.
Other people are working on the pcolortype functions now, so I don't
want to barge in and make these changes, but I don't see any reason they
can't be made once the dust settles.
Eric
