On Mon, Feb 16, 2015 at 2:01 PM, Eric Firing <efir...@hawaii.edu> wrote:
>
> Here is what I think is the most recent extensive thread:
> http://comments.gmane.org/gmane.comp.python.matplotlib.devel/13122
...
> 1) A greyscale has been proposed; it satisfies several of the criteria
> very well, but misses by omitting hue entirely. It is proposed as a way
> to force users to choose something other than the default; I don't think
> this is a good *competitive* strategy.
>
> 2) YlGnBu or YlGnBu_r seems to me to be a viable candidate. It has the
> great advantage that we already have it. It seems to rate well by most
> of the criteria illustrated via Nathaniel's
> https://github.com/njsmith/pycam02ucs viscm() tool. (Perceptual distance
> is a little jumpy.)
>
> Others?
>
Nathaniel's January 9 message in that thread (can't figure out how to link
to it in the archives) had a suggestion that I thought was very promising,
to do something similar to Parula but rotate around the hue circle the
other direction so that the hues would go blue - purple - red - yellow. I
don't think we've seen an example of exactly what it would look like, but I
reckon it would be similar to the middle colormap here
http://earthobservatory.nasa.gov/blogs/elegantfigures/files/2013/08/three_perceptual_palettes_618.png
(from the elegant figures block series linked above), which I've always
found quite attractive.
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