latex in text doesn't work

Hi,

I've tried the following:

text(1, 1.5,sprintf('$\tilde{y_x}$= %.3f',5), ...
    'Interpreter', 'LaTeX','fontsize', 30);

and the result is:

If I remove the tilde:

text(1, 1.5,sprintf('$y_x$= %.3f',5), ...
    'Interpreter', 'LaTeX','fontsize', 30);

the result is:

I really appreciate any kind of help.

Answer 1

[Star Strider]

Use two backslants (\\) in any sprintf call to ‘escape’ it —

text(1, 1.5,sprintf('$\\tilde{y_x}$= %.3f',5), ...
    'Interpreter', 'LaTeX','fontsize', 30);
axis([0 2 0 2])

.

Answer 2

[Matt J]

gca;

s=sprintf('$\\tilde{y}_x$ = %.3f',5)

s = '$\tilde{y}_x$ = 5.000'

text(0.5, 0.5,s, ...
    'Interpreter', 'LaTeX','fontsize', 30);