mantao/Plots.jl
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Merge pull request #3105 from daschw/discrete-ticks

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more regular automatic categorical ticks
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Daniel Schwabeneder 2020-10-28 22:59:22 +01:00 committed by GitHub
commit 2a4f00b80a
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2 changed files with 12 additions and 2 deletions
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5
src/axes.jl
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@ -227,8 +227,9 @@ function get_ticks(sp::Subplot, axis::Axis; update = true)
if !isempty(dvals)
# discrete ticks...
n = length(dvals)
rng = if ticks == :auto
Int[round(Int,i) for i in range(1, stop=n, length=min(n,15))]
rng = if ticks == :auto && n > 15
Δ = ceil(Int, n / 10)
Δ:Δ:n
else # if ticks == :all
1:n
end

9
test/test_axes.jl
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@ -12,3 +12,12 @@ end
@test plot(1, axis=nothing)[1][:xaxis][:ticks] == []
@test plot(1, axis=nothing)[1][:yaxis][:ticks] == []
end # testset
@testset "Categorical ticks" begin
p1 = plot('A':'M', 1:13)
p2 = plot('A':'Z', 1:26)
p3 = plot('A':'Z', 1:26, ticks = :all)
@test Plots.get_ticks(p1[1], p1[1][:xaxis])[2] == string.('A':'M')
@test Plots.get_ticks(p2[1], p2[1][:xaxis])[2] == string.('C':3:'Z')
@test Plots.get_ticks(p3[1], p3[1][:xaxis])[2] == string.('A':'Z')
end