Alan, It sounds like what you want is a listed colormap with direct indexing using a NoNorm() instance as the norm:
aa = ones((2,3), dtype=int) aa[0,0] = 0 aa[:,2] = 2 cmap = mpl.colors.ListedColormap(['k', 'r', 'b']) norm = mpl.colors.NoNorm() matshow(aa, cmap=cmap, norm=norm, interpolation='nearest') The array has to be one of the integer dtypes. Also see examples/colorbar_only.py if you want to use a colorbar--but I suspect you won't for your present application. Eric Alan G Isaac wrote: > I have an integer array. > The number of different integers is small, > so small that I would like to define an > integer to color mapping and use this > with matshow. E.g., > 0 -> black > 1 -> red > 2 -> blue > etc > > Possible? > > Thank you, > Alan Isaac > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
