mantao/Plots.jl
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Better twinx (#3564)

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* improve twinx

* add tests, disable gridlines of twinx
This commit is contained in:
Simon Christ 2021-06-10 15:00:19 +02:00 committed by GitHub
parent 849d31d57f
commit 990e0f3f7f
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2 changed files with 23 additions and 5 deletions
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12
src/layouts.jl
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@ -775,9 +775,17 @@ end
"Adds a new, empty subplot overlayed on top of `sp`, with a mirrored y-axis and linked x-axis."
function twinx(sp::Subplot)
sp[:right_margin] = max(sp[:right_margin], 30px)
plot!(sp.plt, inset = (sp[:subplot_index], bbox(0,0,1,1)))
plot!(sp.plt,
inset = (sp[:subplot_index], bbox(0,0,1,1)),
right_margin = sp[:right_margin],
left_margin = sp[:left_margin],
top_margin = sp[:top_margin],
bottom_margin = sp[:bottom_margin],
)
twinsp = sp.plt.subplots[end]
twinsp[:xaxis][:grid] = false
twinsp[:yaxis][:grid] = false
twinsp[:xaxis][:showaxis] = false
twinsp[:yaxis][:mirror] = true
twinsp[:background_color_inside] = RGBA{Float64}(0,0,0,0)
link_axes!(sp[:xaxis], twinsp[:xaxis])

16
test/test_axes.jl
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@ -35,13 +35,13 @@ end
@testset "Axis limits" begin
pl = plot(1:5, xlims=:symmetric, widen = false)
@test Plots.xlims(pl) == (-5, 5)
pl = plot(1:3)
@test Plots.xlims(pl) == Plots.widen(1,3)
pl = plot([1.05,2.0,2.95], ylims=:round)
@test Plots.ylims(pl) == (1, 3)
pl = plot(1:3, xlims=(1,5))
@test Plots.xlims(pl) == (1, 5)
@ -53,3 +53,13 @@ end
ql = quiver([1, 2], [2, 1], [3, 4], quiver = ([1, -1], [0, 0], [1, -0.5]), arrow=true)
@test ql[1][:projection] == "3d"
end
@testset "twinx" begin
pl = plot(1:10, margin = 2Plots.cm)
twpl = twinx(pl)
pl! = plot!(twinx(), -(1:10))
@test twpl[:right_margin] == 2Plots.cm
@test twpl[:left_margin] == 2Plots.cm
@test twpl[:top_margin] == 2Plots.cm
@test twpl[:bottom_margin] == 2Plots.cm
end