Stacked bars in clustered mode with separate colors and labels

[Erdragh]

Essentially, I'm trying to make the following plot:

from this data https://gist.github.com/Erdragh/774b42f93b51a7623f090413cedc445a

I would like error bars.

[johannes-wolf]

Here is an example of how you can do both stacked and “clustered” columns in a single plot/chart:

#import "@preview/cetz:0.4.2"
#import "@preview/cetz-plot:0.1.3": plot

#set page(width: auto, height: auto, margin: .5cm)

#let voldata = (
  (1, 25, 5),
  (2, 35, 3),
  (3, 50, 4),
)
#let volxel = (
  (1, 10, 4),
  (2, 15, 3),
  (3, 20, 5),
)

#cetz.canvas({
  plot.plot(size: (8, 5), {
    plot.add-bar(
      mode: "stacked",
      bar-position: "start",
      bar-width: .25,
      voldata,
    )
    
    plot.add-bar(
      mode: "stacked",
      bar-position: "end",
      bar-width: .25,
      volxel,
    )
  })
})

Gives: