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

4 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)?
##### 1 CommentShowHide None
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.

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### Accepted Answer

Walter Roberson on 8 Dec 2021
The \text is the immediate problem. If you use \textrm instead then you get something
##### 4 CommentsShowHide 3 older comments
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.

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R2021b

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