I am working with Julia and the Symbolics package to display variable names as LaTeX. I have a variable defined with a LaTeX-like name using the @variables macro:
Pkg.add("Symbolics")
using Symbolics
@variables var"\frac{\partial y}{\partial x}"
I would like to display this variable name as LaTeX, but when I use display(var"\frac{\partial y}{\partial x}"), it shows the value of the variable rather than the LaTeX expression. I want to display the variable name like using the L"" string :
L"\frac{\partial y}{\partial x}" |> display
Is there a way to display this symbolic variable name as LaTeX, so it shows the variable name itself.
I have tried the following approaches to display the symbolic variable var"\frac{\partial y}{\partial x}" as LaTeX:
I attempted to display the variable:
front = "L\""
back = '"'
eval(print(front, :(var"\frac{\partial y}{\partial x}") ,back)) |> display
but it did not work.
I expect that I can use metaprogramming to display the symbolic variable var"\frac{\partial y}{\partial x}" as LaTeX i.e. as output of L"\frac{\partial y}{\partial x}" |> display, showing the variable name itself, var"\frac{\partial y}{\partial x}".
My expectation is to find a solution or an alternative approach that allows me to display the symbolic variable name as LaTeX, preserving the variable's LaTeX-like formatting.
You have two options.
First, by specifying the MIME of the output, you can get the variable to be displayed as a LaTeX equation:
julia> x = (@variables var"\frac{\partial y}{\partial x}")[1]
var"\\frac{\\partial y}{\\partial x}"
julia> display("text/latex", x)
$$ \begin{equation}
\frac{\partial y}{\partial x}
\end{equation}
$$
You can also turn the variable into a Symbol (by calling Symbol) and then a LaTeXString (by calling LaTeXStrings.jl’s latexstring), which will get you the LaTeX in inline form.
julia> latexstring(Symbol(x))
L"$\frac{\partial y}{\partial x}$"