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Title: ENH: add modified CMRmap colormap with improved linearity by zblz · Pull Request #5172 · matplotlib/matplotlib · GitHub

Open Graph Title: ENH: add modified CMRmap colormap with improved linearity by zblz · Pull Request #5172 · matplotlib/matplotlib

X Title: ENH: add modified CMRmap colormap with improved linearity by zblz · Pull Request #5172 · matplotlib/matplotlib

Description: The CMRmap colormap has some linearity problems as seen in the Choosing Colormaps page. In 2012, Christopher Hummerstone uploaded to the mathworks file exchange a tweaked version of CMRmap with improved linearity. It is by no means perfect (there is still a kink in the red-orange transition), but better than the original. I think it's worth being in matplotlib because: a) there are no sequential colormaps from black to white and several different colors in between (blue-red-orange), b) it holds well under colorblindness tests. I have added it here with name CMRmap2. Luminosity profile of this version with the code used in the Choosing Colormaps page: In my opinion, this version could outright replace CMRmap (maybe having the original CMRmap as CMRmap_legacy, as discussed in #4681 for the perceptually correct blues), but this would slightly change existing code output.

Open Graph Description: The CMRmap colormap has some linearity problems as seen in the Choosing Colormaps page. In 2012, Christopher Hummerstone uploaded to the mathworks file exchange a tweaked version of CMRmap with imp...

X Description: The CMRmap colormap has some linearity problems as seen in the Choosing Colormaps page. In 2012, Christopher Hummerstone uploaded to the mathworks file exchange a tweaked version of CMRmap with imp...

Opengraph URL: https://github.com/matplotlib/matplotlib/pull/5172

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b38c82c add CMRmap2 cmap zblz Oct 3, 2015 https://github.com/matplotlib/matplotlib/pull/5172/commits/b38c82cda6f51929c8c0a7a02416df20afea7764
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