Hi,
Is there a simple way to come up with a random colourmap? I need to plot
discrete values, and I would like that the colours do not show a trend, to
easily distinguish them?
I read the cookbook entry on "Doing your own colormap", but can't seem to
bring my mind into it!
Cheers!
Jose
José Gómez-Dans wrote:
I need to plot discrete values, and I would like that the colours do not show a trend, to easily distinguish them?
I read the cookbook entry on "Doing your own colormap", but can't seem to bring my mind into it!
Once you gfigure that out (sorry, I don't have any hints off the top of my head), this page may help you choose colors to use:
http://geography.uoregon.edu/datagraphics/color_scales.htm
-Chris
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Jos� G�mez-Dans wrote:
Hi,
Is there a simple way to come up with a random colourmap? I need to plot discrete values, and I would like that the colours do not show a trend, to easily distinguish them?
It might help if you described the application. I am guessing that you have a small number of values (5? 10? 15?) and that using direct indexing with a ListedColormap will be the simplest way to get what you want.
I have recently made this easier in svn, as illustrated by the second panel in examples/colorbar_only.py, but this is not yet available in a released version of mpl.
A simpler use of a ListedColormap is given in examples/contourf_demo.py, in the last plot; this is the same in recent mpl releases as in svn.
I read the cookbook entry on "Doing your own colormap", but can't seem to bring my mind into it!
Are you referring to this http://www.scipy.org/Cookbook/Matplotlib/ColormapTransformations
?
Eric
Cheers!
Jose