[Matplotlib-users] Saving just a colorbar

[Jose Gomez-D. <jgo...@gm...>]

Hi,
I am using Matplotlib to produce colormaps which I use with other
programs. I would like to produce a PNG file with the used colormap
(so that I can overlay). Rather than doing an imshow(<something>)
followed by colorbar, is there an easy way I could pass the colorbar
my cmap instance to have it plotted on its own? In essence, what I
want to do is to do a savefig, and get something along the lines of
what is shown here: <http://www.igidl.ul.pt/colorscale.gif>. I will
need to change the scale (i.e.,, the numbers :D) with each run.

So far, I have "cut+pasted" from a whole image, which is hardly convenient! :(

Cheers,
Jose