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Re: [Matplotlib-users] [matplotlib-devel] RFC: candidates for a new default colormap
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From: Sourish B. <sou...@gm...> - 2015-06-05 18:17:55
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<div class="moz-cite-prefix">On 06/05/2015 10:17 AM, Jody Klymak
wrote:<br>
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<div class="">Anyways, I guess I am advocating trying to find a
colormap with a very obvious central hue to represent zero.
Anomaly data sets are *very* common, so having a default
colormap that doesn’t do something reasonable with them may be a
turn off to new users. <br>
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<br>
I agree that jet does a bad job with anomaly data, but I disagree
that having a diverging colormap as default (or even a "diverging"
argument to anything that takes a cmap value) would solve that. Very
often the "zero" of an anomaly is not at the center of the extrema,
and requires creating a custom diverging colormap anyway (see
attached example).<br>
<br>
OT, I recently found a nice alternative to jet here:
<a class="moz-txt-link-freetext"
href="https://mycarta.wordpress.com/2014/11/13/new-rainbow-colormap-sawthoot-shaped-lightness-profile/">https://mycarta.wordpress.com/2014/11/13/new-rainbow-colormap-sawthoot-shaped-lightness-profile/</a><br>
It takes care of my biggest crib with jet, which is that there is
not enough perceptual variation in the middle of the range.<br>
<br>
Cheers,<br>
Sourish Basu<br>
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