## 5.4 Using LaTeXStrings.jl

LaTeX support in Makie.jl is also available via LaTeXStrings.jl:

using LaTeXStrings

Simple use cases are shown below (Figure 18). A basic example includes LaTeX strings for x-y labels and legends:

function LaTeX_Strings()
x = 0:0.05:4π
lines(x, x -> sin(3x) / (cos(x) + 2) / x; label=L"\frac{\sin(3x)}{x(\cos(x)+2)}",
figure=(; resolution=(600, 400)), axis=(; xlabel=L"x"))
lines!(x, x -> cos(x) / x; label=L"\cos(x)/x")
lines!(x, x -> exp(-x); label=L"e^{-x}")
limits!(-0.5, 13, -0.6, 1.05)
axislegend(L"f(x)")
current_figure()
end
with_theme(LaTeX_Strings, publication_theme())

A more involved example will be one with some equation as text and increasing legend numbering for curves in a plot:

function multiple_lines()
x = collect(0:10)
fig = Figure(resolution=(600, 400), font="CMU Serif")
ax = Axis(fig[1, 1], xlabel=L"x", ylabel=L"f(x,a)")
for i = 0:10
lines!(ax, x, i .* x; label=latexstring("$(i) x")) end axislegend(L"f(x)"; position=:lt, nbanks=2, labelsize=14) text!(L"f(x,a) = ax", position=(4, 80)) fig end multiple_lines() Figure 19: Multiple lines. Where latexstring from LaTeXStrings.jl has been used to parse the string. An alternative to this simple case is L"%$i x", which is used in the next example.

But, before that there is another problem, some lines have repeated colors and that’s no good. Adding some markers and line styles usually helps. So, let’s do that using Cycles for these types. Setting covary=true allows to cycle all elements together:

function multiple_scatters_and_lines()
x = collect(0:10)
cycle = Cycle([:color, :linestyle, :marker], covary=true)
set_theme!(Lines=(cycle=cycle,), Scatter=(cycle=cycle,))
fig = Figure(resolution=(600, 400), font="CMU Serif")
ax = Axis(fig[1, 1], xlabel=L"x", ylabel=L"f(x,a)")
for i in x
lines!(ax, x, i .* x; label=L"%$i x") scatter!(ax, x, i .* x; markersize=13, strokewidth=0.25, label=L"%$i x")
end
axislegend(L"f(x)"; merge=true, position=:lt, nbanks=2, labelsize=14)
text!(L"f(x,a) = ax", position=(4, 80))
set_theme!() # reset to default theme
fig
end
multiple_scatters_and_lines()