Tick size in Plots.jl

General Usage
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1

I am having a very hard time trying to increase tick size in Plots.jl using gr(). Apparently there is no documentation on this either. Is there a way to do it?

2

The ticks’ thickness can be increased together with the axes - see manual section here. The axes labels fonts will increase too. To avoid that do:

using Plots; gr()
a = 2/3
Plots.scalefontsizes(a)
plot(sin, thickness_scaling = 1/a)
# Plots.reset_defaults()
3

I have found the solution regarding thickness, thanks! However, what I really want to increase is length, while keeping thickness fixed.

4

Check the simple ticks_length!() function herein to increase the ticks length:

function ticks_length!(;tl=0.02)
    p = Plots.current()
    xticks, yticks = Plots.xticks(p)[1][1], Plots.yticks(p)[1][1]
    xl, yl = Plots.xlims(p), Plots.ylims(p)
    x1, y1 = zero(yticks) .+ xl[1], zero(xticks) .+ yl[1]
    sz = p.attr[:size]
    r = sz[1]/sz[2]
    dx, dy = tl*(xl[2] - xl[1]), tl*r*(yl[2] - yl[1])
    plot!([xticks xticks]', [y1 y1 .+ dy]', c=:black, labels=false)
    plot!([x1 x1 .+ dx]', [yticks yticks]', c=:black, labels=false, xlims=xl, ylims=yl)
    return Plots.current()
end

# usage:
x = 0:0.01:2π; y = 0.1sin.(x)
plot(x,y)
ticks_length!()

plot(x,y)
ticks_length!(tl=0.015)
2 Likes
5

This is very handy! It’s unfortunate that the option is not implemented, but your fix certainly does the job for me. Thanks!

Edit: It doesn’t look like it works with 3D plots, though.

6

Is there any way to do the same for minor ticks? Replacing

Plots.xticks(p)

by

Plots.xminorticks(p)

does not work and the documentation is very sparse on that.

7

Just poking around in the source code here, to get the position of the minor xticks we can do:

using Plots; gr()
p = plot(size=(600,600), xlim=(1.1,5.3), ylim=(-0.1,3.0), xminorticks=2, yminorticks=2)
sp = first(p)
ticks = xticks(sp)
minor_ticks = Plots.get_minor_ticks(sp, sp[:xaxis], ticks)