[Matplotlib-devel] Gasoline Rainbow: a modernized prism colormap
Michael Waters
waters.mike.j at gmail.com
Thu Mar 5 23:48:49 EST 2020
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 at gmail.com <mailto:waters.mike.j at 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 at gmail.com <mailto:waters.mike.j at 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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