Hi All,
I have developed a colormap, gasoline_rainbow, with high local contrast that is also perceptually uniform and linear luminant. It fulfills a similar role as prism but has some non-local contrast due to it's linear luminance.
You can see it here: https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master
Is there any interest in including this map in MPL? I think it could fill a role missing from the default options.
Cheers,
-Mike
···
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Hi,
This looks cool, but it might be better as either a stand alone package (add the Famework :: Matplotlib classifier for better discoverability) or bundled into https://github.com/holoviz/colorcet or https://github.com/pyviz/contrib_colormaps. You may also consider writing it up and submitting it to JOSS, similar to CMasher (https://joss.theoj.org/papers/10.21105/joss.02004).
Thanks,
Hannah
···
On Tue, Mar 3, 2020 at 1:32 PM Michael J. Waters waters.mike.j@gmail.com wrote:
Hi All,
I have developed a colormap, gasoline_rainbow, with high local contrast
that is also perceptually uniform and linear luminant. It fulfills a
similar role as prism but has some non-local contrast due to it’s linear
luminance.
You can see it here:
https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master
Is there any interest in including this map in MPL? I think it could
fill a role missing from the default options.
Cheers,
-Mike
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Hi Greg,
I think having monotonic luminance is good because the viewer
still gets information on the overall position in the data set,
not just local contrast (like with prism). If there is sufficient
interest, I could try constructing a new version that forgoes
linear luminance for monotonic luminance but still is perceptually
uniform.
-Mike
···
On 3/4/20 2:25 PM, Isaac Gerg wrote:
I think its a good colormap for exploratory
analysis. I would include it in the baseline.
Lots of people bag on jet or rainbow but for exploratory
analysis where you have data of a large dynamic range, linear
luminance is not something you want. I think this would be a
good substitute.
On Tue, Mar 3, 2020 at 1:32 PM
Michael J. Waters <waters.mike.j@gmail.com >
wrote:
Hi
All,
I have developed a colormap, gasoline_rainbow, with high local
contrast
that is also perceptually uniform and linear luminant. It
fulfills a
similar role as prism but has some non-local contrast due to
it’s linear
luminance.
You can see it here:
[https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master](https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master)
Is there any interest in including this map in MPL? I think
it could
fill a role missing from the default options.
Cheers,
-Mike
_______________________________________________
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Matplotlib-devel@python.org
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Hi all,
I don't know if anyone other than Isaac Gerg is interested, but
gasoline_rainbow has about 5.3x the total contrast of viridis. I
understand there are some aesthetic issues with the colormap, but
as an upgrade for prism, I don’t think it’s too bad.
Cheers,
-Mike
···
On 3/4/20 3:12 PM, Isaac Gerg wrote:
sorry, I didnt mean monotonic luminance but
repeating colors. I think the colormap is useful as it stands.
Isaac
On Wed, Mar 4, 2020 at
4:03 PM Michael J. Waters <waters.mike.j@gmail.com >
wrote:
Hi Greg,
I think having monotonic luminance is good because
the viewer still gets information on the overall
position in the data set, not just local contrast
(like with prism). If there is sufficient interest,
I could try constructing a new version that forgoes
linear luminance for monotonic luminance but still
is perceptually uniform.
-Mike
On 3/4/20 2:25 PM, Isaac Gerg wrote:
I think its a good colormap for
exploratory analysis. I would include it in the
baseline.
Lots of people bag on jet or rainbow but for
exploratory analysis where you have data of a
large dynamic range, linear luminance is not
something you want. I think this would be a
good substitute.
On Tue, Mar 3,
2020 at 1:32 PM Michael J. Waters <waters.mike.j@gmail.com >
wrote:
Hi All,
I have developed a colormap, gasoline_rainbow,
with high local contrast
that is also perceptually uniform and linear
luminant. It fulfills a
similar role as prism but has some non-local
contrast due to it’s linear
luminance.
You can see it here:
[https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master](https://gitlab.com/mjwaters/gasoline-rainbow-colormap/-/tree/master)
Is there any interest in including this map in
MPL? I think it could
fill a role missing from the default options.
Cheers,
-Mike
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Matplotlib-devel@python.org
[https://mail.python.org/mailman/listinfo/matplotlib-devel](https://mail.python.org/mailman/listinfo/matplotlib-devel)
I agree with Hannah, the proposed color map is interesting, but I think it would be better as it’s own stand alone package or folded into one of {colorcet, contrib_colormaps, cmasher}.
Tom
···
Thomas Caswell
tcaswell@gmail.com