I was just working with a student to do this. It is straightforward (using norms, as Eric suggests), but not short. I think it would be good to include wrappers for creating these norms to MPL.
The advantage is then it works for everything: pcolor, scatter, etc. -Rob On Jan 31, 2008, at 12:07 AM, Eric Firing wrote: > Jordan, > > This sounds useful, but I think it can be implemented without any new > plot type, simply by using a different sort of norm to do the > colormapping. I need to add this anyway, and I have a prototype. > It is > very simple. I will get it in within the next few days, and then you > can see whether it meets your needs. > > Eric > > Jordan Dawe wrote: >> 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 >> >> >> --------------------------------------------------------------------- >> ---- >> This SF.net email is sponsored by: Microsoft >> Defy all challenges. Microsoft(R) Visual Studio 2008. >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >> _______________________________________________ >> Matplotlib-devel mailing list >> Matplotlib-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > > > ---------------------------------------------------------------------- > --- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel ---- Rob Hetland, Associate Professor Dept. of Oceanography, Texas A&M University http://pong.tamu.edu/~rob phone: 979-458-0096, fax: 979-845-6331 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
