# Are there Any Restrictions on Latex Markup in Figure Titles?

3 views (last 30 days)
Paul on 8 Dec 2021
Commented: Walter Roberson on 8 Dec 2021
This works fine:
syms t
s1(t) = exp(-abs(t));
figure;
title("$"+latex(s1(t))+"$",'Interpreter','latex')
But this does not
s2(t) = piecewise(t<-1,0, t>2,0, exp(-abs(t)));
figure;
title("$"+latex(s2(t))+"$",'Interpreter','latex')
Warning: Error updating Text.

String scalar or character vector must have valid interpreter syntax:
$\left\{\begin{array}{cl} 0 & \text{\ if\ \ }t<-1\vee 2<t\\ {\mathrm{e}}^{-\left|t\right|} & \mathrm{ otherwise} \end{array}\right.$
Is there any way to get s2(t) on the figure in any way at all (title, text, anything)?
Star Strider on 8 Dec 2021
The Symbolic Math Toolbox has its own way of depicting piecewise functions:
syms t
s2(t) = piecewise(t<-1,0, t>2,0, exp(-abs(t)))
s2(t) =
I doubt that could be incorporated into a text object of any sort.

Walter Roberson on 8 Dec 2021
The \text is the immediate problem. If you use \textrm instead then you get something
Walter Roberson on 8 Dec 2021
\text is part of the amsmath package. There is no documentation as to which packages the various components support, but amsmath is decidedly not supported for graphics objects.

R2021b

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