Using LaTeX strings as labels for contours in contour.

[MstislavKeldysh]

At the moment it does not seem to be possible to use anything other than unicode symbols.
Using LaTeX strings as output of a labelformatter function crash contour() function.

Meaning that this does not work:

function Q1d(; N=50, h=1, EsmA = 0, a=1)

    E(k) = EsmA + 2*h*( cos( k[1]*a  ) + cos(k[2]*a)   )


    testX =  [ pi/a*j/N  for j in -N:N]

    xx = [ [ testX[i]  , testX[j] ] for  i in 1:length(testX), j in 1:length(testX)]

    Es = E.(xx)


    levels = [ EsmA+2*h , EsmA+h , EsmA , EsmA-2*h ]

    customLabels = [L"E-A+2h" ,L"E-A + h", L"E-A ", L"E-A -2h"  ]

    levelsVText = [ [levels[i], customLabels[i]] for i in 1:length(levels)   ]


    function labelformatter(aa)
        return  customLabels[ findfirst(==(aa) , levels ) ]
    end
    

    fig, ax, ct = contour(testX,testX,Es;levels=levels, labels=true, labelformatter)

    return fig

end 

Would it be possible to add this kind of functionality to contour?

[henrik-wolf]

Do you know what version of Makie and what Backend you are using? I do not get an error on Makie v0.24.7 with CairoMakie 0.15.7 or GLMakie 0.13.7, instead, the figure looks like: