Running into problems using the latex interpreter in strings

I have attached a code snippet that I'm trying to execute (Matlab Ver. 2024b):

I get warnings as follows:

Warning: Error in state of SceneNode.

String scalar or character vector must have valid interpreter syntax:

Inband Radiance, $\\left[\\frac{W}{\\mathrm{m}^2\\,\\mathrm{sr}}\\right]$

> In defaulterrorcallback (line 12)

In matlab.graphics.illustration/ColorBar/get.Label

Warning: Error in state of SceneNode.

String scalar or character vector must have valid interpreter syntax:

Event # 0089, Filter Wheel #1: Spectral Range = 1.97-5.39 $\\mu$m

The colorbar label looks ok to me, but the interpreter in the figure title is not interpreted at all,and just shows up as $\mu$ in the title (see the attached. .png file). Could someone please let me know what I am doing incorrectly?

Answer 1

[Matt J]

There are two issues, mainly.

(1) You should set the Interpreter first (before the String), to avoid the warnings

(2) Because it's LaTeX, your pound signs need slashes: \#

    XCoors      = 1:320;
    YCoors      = 1:256;
    A           = rand(numel(XCoors),numel(YCoors));
    spRangeSel  = ' 1.97-5.39';
    channelNum  = 1;
    eventNum    = 1;

    fig         = figure;
    figWidth    = 0.65;
    figHeight   = figWidth*XCoors(end)/YCoors(end);
    set(gcf,'units','normalized','Position',[(1-figWidth)/2 (1-figHeight)/2 figWidth figHeight],'color','white');

    h=imagesc(XCoors,YCoors,A); shading interp; colormap hot; axis equal
    
    a                   = colorbar;
    a.Label.Interpreter = 'latex';
    a.Label.String      = 'Inband Radiance, $\left[\frac{W}{\mathrm{m}^2\,\mathrm{sr}}\right]$';    


    ax1 = gca;
    ax1.FontSize=20;
    xlabel(ax1,'X [mm]','Fontsize',24,'interpreter','latex');
    ylabel(ax1,'Y [mm]','Fontsize',24,'interpreter','latex');

    ax1.Title.Interpreter   = 'latex';
    ax1.Title.String        = ['Event \# ',num2str(eventNum,'%4.4d'),', Filter Wheel \#',int2str(channelNum),': Spectral Range =',spRangeSel,' $\mu$m'];
    
    ax1.Title.FontName      = 'Times';

●

[MBP]

Thank you! I forgot I needed to escape the '#' symbols too!