Label metadata

[jkrumbiegel]

Makes it more convenient to work with table data that has column label metadata attached:

using AlgebraOfGraphics
using CairoMakie
using DataFrames
using Unitful

df = DataFrame(
    t = 1:10,
    v = sin.(1:10),
    c = sqrt.(1:10) .* u"mg/L",
)

colmetadata!(df, :t, "label", "Time")
colmetadata!(df, :v, "label", "Volume")
colmetadata!(df, :c, "label", "Concentration")


data(df) * mapping(:t, :v, color = :c) * visual(Scatter) |> draw