RFC: candidates for a new default colormap

Same here. I prefer D over the rest because of both its aesthetic and technical merits.

Phil

···

--------------------------------------------------
Phillip J. Wolfram, Ph.D.
Postdoctoral Research Associate
Climate, Ocean and Sea Ice Modeling
T-3 Fluid Dynamics and Structural Mechanics
Los Alamos National Laboratory
Phone: (505) 667-3518
Email: pwolfram@...809...

On Jun 4, 2015, at 10:37 AM, <matplotlib-devel-request@...1148...t> <matplotlib-devel-request@lists.sourceforge.net> wrote:

Message: 1
Date: Thu, 4 Jun 2015 09:37:12 -0700
From: Brian Granger <ellisonbg@...149...>
Subject: Re: [matplotlib-devel] RFC: candidates for a new default
  colormap
To: Joe Kington <joferkington@...149...>
Cc: matplotlib-devel <matplotlib-devel@lists.sourceforge.net>
Message-ID:
  <CAH4pYpRms3xbu=m==Jdi7=XJAsTusKPD-6+tYoo+vH05nR5HVw@...150...>
Content-Type: text/plain; charset="utf-8"

I very much like D.

On Thu, Jun 4, 2015 at 9:34 AM, Joe Kington <joferkington@...149...> wrote:

Well that got horribly garbled somehow (and I hit send too early). Let me
try that again:

?

On Thu, Jun 4, 2015 at 11:27 AM, Joe Kington <joferkington@...149...> >> wrote:

One other (admittedly very minor) consideration is how the colormaps look
with shading applied. To borrow from the hillshading example
<http://matplotlib.org/devdocs/examples/specialty_plots/topographic_hillshading.html&gt;
:

(The image appears to be too large to attatch. Try here: http://
<http://www.geology.beer/images/hillshaded.png&gt;www\.geology\.beer
<http://www.geology.beer/images/hillshaded.png&gt;/images/
<http://www.geology.beer/images/hillshaded.png&gt;hillshaded\.png
<http://www.geology.beer/images/hillshaded.png&gt;\)
<http://www.geology.beer/images/hillshaded.png&gt;

I personally really like option D for a lot of reasons, but this is
another reason to prefer it. Providing additional information through
"shading" etc, still works quite well. Option C also does well in this
particular test, though it appears too "washed out" for my tastes.

At least to my eyes, options B fairs particularly poorly. In B's case,
the fact that the colormap runs towards black means that hillshading is
difficult to distinguish from elevation changes. A suffers from similar
problems in this case, though they're much less severe.

In my personal opinion: D >> A > C > B

Cheers,
-Joe
Fun activity: watch all 6 videos in a row then watch the text on this
email spin and spin. =P

Gorgeous! Thanks Nathan!

I hope this kills C dead. It clearly makes certain features of the
simulation harder to spot.

A great demo of the terribleness of jet, too: it looks like a huge mess.

On Thu, Jun 4, 2015 at 5:42 PM, Nathan Goldbaum <nathan12343@...149...> >>> wrote:

On Wed, Jun 3, 2015 at 5:17 PM, St?fan van der Walt <stefan@...337...> >>>> wrote:

On Wed, Jun 3, 2015 at 5:08 PM, Nathan Goldbaum <nathan12343@...714....> >>>>> wrote:

I'm a big fan of option D. So much so that when I needed to make a

movie of

ony my galaxy simulations today I went ahead and used it:

https://youtu.be/bnm554et0T8

Beautiful! How hard would it be to also do this for the other
proposed colormaps?

Thankfully you made it pretty easy to script this.

jet: https://www.youtube.com/watch?v=dsvT5hImPmo

parula: https://www.youtube.com/watch?v=8146CMi-OaQ

option a: https://www.youtube.com/watch?v=IqvxuQSzWO4

option b: https://www.youtube.com/watch?v=wa7bpV3XPV0

option c: https://www.youtube.com/watch?v=3rHbq4jw1ew

option d: https://www.youtube.com/watch?v=2_HiUXVNm2k

St?fan

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--
Brian E. Granger
Cal Poly State University, San Luis Obispo
@ellisonbg on Twitter and GitHub
bgranger@...882... and ellisonbg@...149...
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