How can I change a single color in a Plots.jl palette?

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1

If I have a palette, is there some way to change the colors by index?

c = palette(:tab10)
c[10] = colorant"black"

ERROR: MethodError: no method matching setindex!(::ColorPalette, ::RGB{N0f8}, ::Int64)
2

This seems to work, but I have no clue why we have to dig so deep:

c.colors.colors[10] = colorant"black"
1 Like
3

Thanks!
Follow-up: how did you find that?

4

Digging in the REPL with dot-TAB. Type c. <TAB> to find out that c is a rich object with fields. Then do the same for c.colors. <TAB>, and keep digging on…

5

Nice, I’ll add the dot-tab shovel to my toolkit.

It seems odd that

julia> c[1]
RGB{Float64}(0.1216,0.4667,0.7059)

and

julia> c.colors.colors[1]
RGB{Float64}(0.1216,0.4667,0.7059)

but you can’t assign a value to the first.