A simpler way to plot heatmaps with independent colorbars

[lazarusA]

The following kinda works?

using GLMakie, DataFrames, AlgebraOfGraphics
df = DataFrame(;
    x = repeat(repeat(1:10, inner=10), outer =2),
    y = repeat(repeat(1:10, outer =10), outer =2),
    val= rand(200),
    l = [fill("a", 100)..., fill("b",100)...])

data(df) * mapping(:x, :y, :val, layout=:l) * visual(Heatmap) |> draw

but,

1. it will be nice if there were a simpler way to pass the data.
2. each heatmap could have his own
   -colobar
   -colormap
   -colorrange
   so that we could control the appearance for different variables (a & b here).

[mscott99]

Thanks for that code, I was trying to figure out how to display a heatmap from a 2d array.

I agree with the issue, it would be nice to have Matrix elements in a dataframe that can be processed to a heatmap, since the heatmap function can take them as arguments.

It seems to me that a single colorbar is preferable by default.

[jkrumbiegel]

Closing the specific request for independent color bars for different values of a grouping variable as not planned. The new scales system would allow you two use different color scales if you had different factors, but there isn't support for adding those multiple colorbars yet (that's a different issue, though).