So I have a (slightly) new plot type I would like to add to the 
matplotlib codebase, and I'd like to ask A) if people would be 
interested in the patch and B) what the best way to implement it would be.

I am currently calling the plot type "pcontourf"--it's essentially a 
pcolor, but instead of a continuous color spectra of value, it plots 
discrete levels of data like contourf does.  I find this kind of plot 
useful for model output--it displays the model grid, and also emphasizes 
data transitions, for example, between the negative and positive areas 
of a plot, better than pcolor.  Essentially it is just a contourf 
wrapper that, instead of calling contourf with values at the 'center' of 
a grid cell, calls contourf with points at the edges of the grid cell so 
you end up with rectangular areas.

If someone is actually interested in clean this up and put it into svn, 
my next question is where in the codebase would be the best place to put 
it so I can make a clean diff file?  pyplot.py?  I don't quite 
understand how the matplotlib module hierarchy works.

Jordan


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