Coloring table cells based on their values

[ttusar]

I would like to be able to color table cells based on their values such as shown here: https://www.siavoosh.com/blog/2019/01/05/latex-table-cell-coloring-based-on-values-in-the-cell/ (the code to produce this example is available at https://www.overleaf.com/read/dywhsntqpzbk), but using perceptually uniform color maps that you provide in this repository. Can this be done?

[zauguin]

This is not really an issue, but you can do something like https://gist.github.com/zauguin/0d8360374c851871de39c8869e71246a (This uses CIELuv). Here the difference is rather minimal though, mostly you just see effects from using a cylindrical space and not from using a uniform one. So you would get quite similar results by using HSB.

[ttusar]

This works great and is exactly what I was looking for, thank you so much for taking the time to do it!

[ttusar]

Now that I've played with it a bit more I actually have an additional question - is there a way to change the color of the text in the cell depending on the lightness of the background color?

In the example below it is hard to read the values above 0.8 - it would be great to automatically use white as font color:

[zauguin]

Fundamentally luaicc converts between ICC color profiles. So if you want to use it to determine the lightness of a color, you can create an ICC profile representing a monochrome colorscheme which only corresponds to the lightness, e.g. as in https://gist.github.com/zauguin/392687c327c5345458520a9f9ae60287

[ttusar]

This does not work for me, I guess the lightness.icc is missing.

[ttusar]

Apologies, I didn't see that you have included that file as well.

Works like a charm, many thanks again!