Re: [matplotlib-devel] Matplotlib's new default colormap

[Michael D. <md...@st...>]

I, for one, would love to see a pull request for this if you're game.

Mike

On 11/24/2014 04:27 AM, Lion Krischer wrote:
> Hi all,
>
> I was made aware of this thread and thought I’d share a notebook I 
> recently made for a similar purpose:
>
> http://nbviewer.ipython.org/gist/krischer/d35096a9d3b6da5846a5 (takes 
> a while to load…)
>
> It attempts to “optimize" colormaps by defining optimality as having a 
> linear lightness across the colormap in LAB color space. It is very 
> simple and not a proper optimization procedure. It just goes to LAB 
> space, sets the lightness to the target lightness, and goes back to 
> sRGB space. This does not always work as the LAB color space is much 
> bigger than the RGB one but in many cases it produces fairly good results.
>
> The nice thing about this is that the lightness range can be chosen so 
> it is does not always have to be stark white or black at the ends and 
> some hue can be preserved.
>
> I am not sure if some similar functionality is useful to include into 
> matplotlib (I don’t really think so) but if yes, let me know and I’ll 
> give it a try. I guess it could also be extended to optimize towards 
> monotonic changes in hue.
>
> Cheers and all the best!
>
> Lion
>
>
>
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-- 
Michael Droettboom
Science Software Branch
Space Telescope Science Institute

http://www.droettboom.com