Add license

[cleterrier]

Add license

[cleterrier]

They are free to use. I'll see about a license

[cleterrier]

Here is what was added to the Readme:

All the LUTs in this repository except Turbo have been devised by me and are available under an MIT license. I made an ImageJ LUT for Turbo based on the Apache 2.0 license of the original work.

[swharden]

Thanks @cleterrier! This is great to hear, and I look forward to using these LUTs in some of my own projects. I created a PR (#3) to put this license information in the standard locations.

Thanks again for sharing your LUTs, and good luck with your experiments!
Scott

[swharden]

Yeah this is a rabbit hole. I've been researching this topic for a couple weeks in working on bundling colormaps with two repos I'm working on:

• https://github.com/swharden/ScottPlot
• https://github.com/swharden/Spectrogram

This is what I found:

These are Free and Easy

magma, inferno, plasma, viridis are easy to pull from matplotlib for any purpose. Nice.
https://github.com/BIDS/colormap/blob/master/colormaps.py
They're based on
https://bids.github.io/colormap/

Turbo is Almost Easy

turbo is easy to get but it's Apache licensed (permissive, but slightly different than MIT)
https://ai.googleblog.com/2019/08/turbo-improved-rainbow-colormap-for.html (links at bottom)

Avoid nasty colorbrewer colormap licenses in matplotlib

Other matplotlib colormaps have restrictive licenses, like the ones based on colorbrewer, which is awful because colorbrewer derived works require you to distribute its own silly custom license https://github.com/matplotlib/matplotlib/tree/master/LICENSE so hard pass 🙅

Since I want to mimic "greens" and "blues" from matplotlib in my application, but they're based on colorbrewer and I don't want a rediculous colorbrewer license to infect my repo, I made a tool to help me generate a similar colormap from scratch using spline interpolation 😝 🙈

Please license this repo

So, @cleterrier, I love that you made this library but I agree with @imagejan that this project should have a clear (MIT) license, and each colormap should have a clear statement in its source code whether you made it or not (with ones not made by you maybe having restrictive licenses). I'll bet more people than just me land here looking for this stuff...

Hope it helps!

[cleterrier]

Sorry I made a reply that was not relevant for this repository, as all the LUTs here are from me except Turbo that I only generated as an ImageJ LUT format. I will add an MIT license for the others in the Readme. Thank you for pointing to the Apache license of Turbo.

[cleterrier]

Thanks for this! PR merged and issue closed