How to change font in legend while using latex interpreter

Hey,

I needed a fraction bar in my legend, so I used latex as interpreter, but now the legend font is in the default tex math font and not matlab default helvetica which is the font of all my other figures. How do I change the font back to helvetica when using latex as interpreter? I cant change it manually since in the figure editor the font of the legend is helvetica even if it is clearly not, the interpreter seems to overwrite this seeting.

l=legend('$\displaystyle\frac{max\:grain\:diameter}{number\:weighted\:mean\:grain\:diameter}$','interpreter','latex');
set(l, 'FontName', 'Helvetica')

also does not work.

l=legend('$\mathsf{\frac{max\,\,grain\,\,diameter}{number\,\,weighted\,\,mean\,\,grain\,\,diameter}}$','interpreter','latex');

is kind of ok, but somehow some letters are shifted into each other.

Is there a way to do so and if so how?

Best regards

Answer 1

[Cris LaPierre]

It does not appear to be possible to change the font. You can get roman or italic using \mathrm{} or \mathit{} respectively.

I did rebuild your expression using the equation editor in the live editor then copied the LaTeX. This was just to be sure I was using LaTeX the interpreter recognizes. This is created using the result and \mathrm{}.

plot(rand(1,10),'.')
legend('$\frac{\mathrm{max}\;\mathrm{grain}\;\mathrm{diameter}}{\mathrm{number}\;\mathrm{weighted}\;\mathrm{mean}\;\mathrm{grain}\;\mathrm{diameter}}$','Interpreter',"latex")

[Cris LaPierre]

Also adding that I get a warning when I use \mathsf{}

Warning: Error updating Text.

Font cmss8 is not supported.

[Cris LaPierre]

Perhaps this post can prove helpful?

[Marc Laub]

nope, have tried it out, doesnt work. I also get the warning, but it I ignore it, mathsf is the closest I get to helvetica