Fixing colors to samples in plot1d

Is your feature request related to a problem? Please describe. By default, it seems the color order of stacked+overlayed processes in plot1d is fixed by yield. This makes side-by-side yield comparison of histograms difficult, particularly when one tries to compare individual process yield in a histogram (since if the yield order changes, the color also changes, instead of the color being fixed to a particular sample, so you can’t easily compare side-by-side).

Describe the solution you’d like I would like to have functionality for plot1d to create plots where both:

1. processes are overlayed and stacked are ordered by yield (exists)
2. specific colors are fixed to specific samples (to my knowledge does not exist)

Perhaps this could be passed as an option in plot1d.

[andrzejnovak]

hist should be solving this once https://github.com/scikit-hep/hist/pull/243 gets done

[lgray]

Concerning hist - we do, and I think what you pose as a solution is the right way to go. It’ll be a post 0.7.0 development unless you make a good reason on #396. It may mark 0.8.0 since I imagine there will be breaking changes at some level, or backwards compatibility will be a pain.

Thinking about it, making the plotting interface in coffea as thin as possible, approaching what you’re suggesting, would be a good extension of the 0.7.0 targets.

More generally, I wasn’t proposing an interface but rather a place where people can put recipes for specific useful behaviors so there’s not a parallel ecosystem of twikis and gists. By accumulating those it can help inform further development in dependent packages, and we can update/deprecate contrib items accordingly.

I think a contrib area thing makes a lot of sense from that perspective as typically these recipes involve assumptions about inputs or available packages.