I've written some code to perform contouring on triangular grids. I wrote the underlying C++ for a separate project, but as there has been some interest on the mpl mailing lists for such functionality I've had a go at wrapping it up as a python module so that it is available from mpl. I've also added a few utility functions for plotting triangular grids, doing pseudocolour plots, etc.
Attached is the source code with some documentation and examples. There's an example of the output at http://img10.imageshack.us/img10/2873/tricontourfdemo3g.png This example is similar to one of the mpl contourf examples, but on a triangular grid of 1000 randomly spaced points, with the grid overlaid. So far it is only experimental code and hasn't been widely tested. I have a list of improvements already, but thought it best to let people see a working version before spending time polishing it. If it turned out that a (much improved) version of it was considered good enough to incorporate into mpl, I'd would happily help as I'd like to contribute. I hope someone finds it useful! Ian Thomas
mpl_tri.tar.gz
Description: GNU Zip compressed data
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