Dr. Phillip M. Feldman wrote: > I'd like to generate a scatter plot in which symbols are colored using a > specified colormap, with a specified mapping from the range of the data to > the [0,1] colormap interval. I thought at first that one could use the norm > argument to specify a function that would perform this mapping, but from > closer reading of the documentation (and experimentation) it seems as though > one cannot do this. Is there another mechanism for doing this? (I could > remap the data itself before plotting it, but this is unacceptable because > the colorbar tic lables would then take values in [0,1] rather than values > from the range of the data). >
I don't understand--what you say you want to do is exactly what the norm is designed for. Maybe the problem is that you can't pass in a simple function--you need to subclass colors.Normalize. An example is colors.LogNorm. It looks like what we need is a FuncNorm, which would be initialized with two functions, the forward and inverse transformation functions, each taking vmin, vmax, and a val. Eric ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
