matplotlib-users

[Matplotlib-users] histogram colors

[Carlos G. G. <car...@gm...>]

Dears, I was wondering if I can use a custom colortable in a
histogram, to get something like this:

http://grass.itc.it/grass64/manuals/html64_user/r_surf_gauss_hist.png

thanks



-- 
Carlos Henrique Grohmann - Geologist D.Sc.
a.k.a. Guano - Linux User #89721
ResearcherID: A-9030-2008
carlos dot grohmann at gmail dot com
http://www.igc.usp.br/pessoais/guano/
_________________
"Good morning, doctors. I have taken the liberty of removing Windows
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--The winning entry in a "What were HAL's first words" contest judged
by 2001: A SPACE ODYSSEY creator Arthur C. Clarke

Can’t stop the signal.

Re: [Matplotlib-users] histogram colors

[Ryan M. <rm...@gm...>]

2009/5/6 Carlos "Guâno" Grohmann <car...@gm...>

> Dears, I was wondering if I can use a custom colortable in a
> histogram, to get something like this:
>
> http://grass.itc.it/grass64/manuals/htm/r_surf_gauss_hist.png<http://grass.itc.it/grass64/manuals/html64_user/r_surf_gauss_hist.png>


Not directly, but you could do it by hand.  hist returns (among other
things) a list of rectangle patches that represent all the bars.  You could
set the face/edge color of each of the patches based on the value of the
histogram. This example appears to do what you want:

http://matplotlib.sourceforge.net/examples/pylab_examples/hist_colormapped.html

For the other devs:
This would be easier if hist just returned a collection of rectangles.  Why
again does histogram just use a list of rectangles?

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma