Eric Firing schrieb: > Christian K. wrote: >> Hi everyone, >> >> is it possible to map a certain range within the value-range of a image plot >> to >> a constant value? Currently I am overlaying a filled contour plot with just >> two >> contour levels on top of an image plot. This works, but I would like to >> display >> the plateau in the colorbar as well, so that the color changes continously >> over >> the whole value range but in the specified range where it should remain >> white. >> I guess I would need a special colormapper to achieve that. > > Yes. See > http://matplotlib.sourceforge.net/examples/pylab_examples/custom_cmap.html > for an explanation of how to make one. > > Actually, you can achieve what you want with either a special cmap, or > with a special norm. I don't think we have any examples of the latter.
Tahsnk, Eric. I know understand how to create a discontinous colormap. However I cannot think of an elegant way how to map the data value range to the [0,1] color map range so that always the _value_ range between e.g. 0.41 and 0.43 will be displayed white regardless of the lower and upper bounds of the data value range. Regards, Christian ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
