How can I hide the legend title?

[zdlspace0528]

Dear all,

When I use AlgebraOfGraphics.jl, How can I hide the legend title? Here is an example.

using RDatasets, AlgebraOfGraphics, CairoMakie
df = dataset("datasets", "iris")
plt = data(df) * mapping(:Species, :SepalLength, color = :Species) * visual(Violin)
fg = draw(plt; legend = (position = :bottom, titlevisible = false, framevisible = false))

How can I hide the legend title “Species”? I try to use titlevisible = false, but it does not work.

[greimel]

Try color = :Species => "" and then probably legend = (; titleposition = :left) in draw.

[jkrumbiegel]

With 0.7 onwards you can also set a label in the scales

df = DataFrame(
    SepalLength = randn(300) .* repeat([1, 2, 3], inner = 100),
    Species = repeat(["Setosa", "Versicolor", "Virginica"], inner = 100),
)

plt = data(df) * mapping(:Species, :SepalLength, color = :Species) * visual(Violin)
fg = draw(plt, scales(Color = (; label = "")); legend = (position = :bottom, titlevisible = false, framevisible = false))