Idea: Would it be useful to add ‘patterns’ as another layer in the heatmaps, or is it unnecessary and complex? See the example here: https://vsni.co.uk/reflections-on-a-career-with-genstat/
Personally, I’ve never needed them since we can already use text, color, background color, and outlines.
https://www.rdocumentation.org/packages/gridpattern/versions/1.3.1/topics/grid.pattern https://coolbutuseless.github.io/package/ggpattern/articles/patterns-points.html https://coolbutuseless.github.io/package/ggpattern/articles/geom-gallery-array.html#geom-bar-pattern-