Re: [Matplotlib-users] encoding 2 variables with hue / intensity

[Peter S. <pet...@gm...>]

Mike,

Thanks for the tip, I was also thinking of using some kind of nonlinear
transform onto a 1D segmented colormap... I'll let you know if I come up
with a solution.

-Pete


On Tue, Mar 3, 2009 at 8:27 AM, Michael Droettboom <md...@st...> wrote:

> I don't think there's anything that will directly do what you want.
>
> However, you can provide a list of colors (one entry for each point) to
> scatter(), (the c kwarg) so you can generate your colors however you need to
> beforehand.  If you come up with a solution that's generic enough, we would
> definitely consider it for inclusion in matplotlib.
>
> Cheers,
> Mike
>
> Peter Skomoroch wrote:
>
>> Is there any way to encode 2 variables in a matplotlib colormap?  The idea
>> is to replicate this dataspora R scatterplot in matplotlib:
>>
>> http://www.dataspora.com/gameday/pitcher/daisuke-matsuzaka/493137
>>
>> "The bottom strip of charts encode two dimensions with color -- blue or
>> red hue indicates pitch velocity -- while the lightness or darkness of the
>> hue indicates how many pitches were thrown in a given region. "
>>
>>
>> --
>> Peter N. Skomoroch
>> 617.285.8348
>> http://www.datawrangling.com
>> http://delicious.com/pskomoroch
>> http://twitter.com/peteskomoroch
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>
> --
> Michael Droettboom
> Science Software Branch
> Operations and Engineering Division
> Space Telescope Science Institute
> Operated by AURA for NASA
>
>


-- 
Peter N. Skomoroch
617.285.8348
http://www.datawrangling.com
http://delicious.com/pskomoroch
http://twitter.com/peteskomoroch