Warning: Unable to interpret TeX string

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Matlab2010
Matlab2010 2013-1-28
评论： jqfortune 2024-1-16
I often use greek/ latin variables in my titles/ axis, with no problem.
For example;
figure; title('\bf My Output, \Theta');
comes out fine.
I have just tried to use a latex command for the first time and get the error "Warning: Unable to interpret TeX string "Maxima \hat{V}"
plot(1:10);
legend('Maxima {\hat V}', 'Location','Best', 'interpreter','latex');
I am using MATLAB 2012A on Win7. I use WinEdt 6 and the latest MikTex Package.
I have seen there is a lot of stuff on this error in the forums, but it seems to be platform dependant. None of the fixes I have found seem to work for me.
any ideas? thank you!

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José-Luis
José-Luis 2013-1-28
编辑：José-Luis 2013-1-28
Matlab does not support the full set of latex commands. Please look for the string property in text properties to see the supported commands.
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Daniel Shub
Daniel Shub 2013-1-28
I am not sure what you mean by MATLAB doesn't support all LaTeX commands. With the LaTeX interpreter the string is essentially processed as if it was inserted unmodified into a standard LaTeX article class document. There are a couple of oddities and limitations, but not many and these can be easily hacked by editing either tex.m or mwarticle.cls
José-Luis
José-Luis 2013-1-29
编辑：José-Luis 2013-1-29
From the documentation on text properties ( Interpreter ):
Interpret TeXinstructions. Controls whether MATLAB interprets certain characters in the String property as TeX instructions (default) or displays all characters literally.
  • latex — Supports a basic subset of the LaTeX markup language.
  • tex — Supports a subset of plain TeX markup language. See the String property for a list of supported TeX instructions.
  • none — Displays literal characters.
That is what I meant. Matlab is Turing complete, so in a sense it has the potential to support everything. If you have to start editing internal files to get something to work, then it is not supported, at least as far as I understand the term. Also, it might be trivial to you, but it definitely is not trivial to me.

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Daniel Shub
Daniel Shub 2013-1-28
编辑：Daniel Shub 2013-1-28
It is very possible that I have screwed up my systems LaTeX processing (I have been playing with it recently). For example, on my system,
title('\bf My Output, \Theta');
doesn't work, but
title('\bf My Output, $\Theta$');
does. Similarly
title('Maxima {\hat V}', 'interpreter','latex')
doesn't work, but
title('Maxima ${\hat V}$', 'interpreter','latex')
does.
EDIT
Getting LaTeX to work with a legend is apparently a little tricker. Apparently, despite legend objects having an Interpreter property, it cannot be set with
plot(1:10);
h = legend('Maxima ${\hat V}$', 'Location','Best', 'interpreter','latex');
get(h, 'Interpreter')
Tells you that the interpreter is still tex. It also produces a warning
Warning: Ignoring extra legend entries.
This keys you into the fact that it is treating 'interpreter','latex' as legend entries. If instead you do
plot(1:10);
h = legend('Maxima ${\hat V}$', 'Location','Best');
set(h, 'Interpreter', 'latex')
everything is fine (despite the warnings). Even better would be
plot(1:10);
h = legend('XXX', 'Location','Best');
set(h, 'Interpreter', 'latex', 'string', 'Maxima ${\hat V}$');
which avoids all the errors also.
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Matlab2010
Matlab2010 2013-1-28
excellent. thanks !!
plot(1:10); hold all; plot(1:10); plot(1:10);
[legend_h,object_h,plot_h,text_strings] = legend('XXX','YYY','ZZZ', 'Location','Best');
set(legend_h, 'Interpreter', 'latex', 'string', {'Maxima ${\hat X}$','Maxima ${\hat Y}$','Maxima ${\hat Z}$'});
jqfortune
jqfortune 2024-1-16
This is so helpful for me in R2020b, thanks so much!

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