How to write big fraction in texts

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Marius Hammer 2019-2-7

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https://ww2.mathworks.cn/matlabcentral/answers/443724-how-to-write-big-fraction-in-texts

评论： Ricardo Fernández de Aldama 2022-9-5

Is it in Matlab possible to plot a fraction in text which keeps the same text size. That is not reducing the text size inside the \frac enviroment?

In LaTeX you have the command \dfrac{a}{b} but this command doesn't work in Matlab using the LaTeX interpreter?

figure (1)
plot(Bq,d);
title('Pore Pressure Ratio');
xlabel('B_q [-]');
ylabel('Depth [m]');
text(0.8,-2.8,'$B_q = \frac{\Delta u}{q_t-\sigma_{v0}}$','interpreter','latex','EdgeColor','k'); % the text within the frac is reduced here :(
set (gca,'Ydir','reverse');
grid on;

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Star Strider 2019-2-9

I am not certain if the text call 'FontSize' name-value pair scales the font or scales the entire text object. It definitely has some effect.

Nevrtheless, there appear to be some problems with the LaTeX interpreter as MATLAB uses it.

Walter Roberson 2019-2-10

For example '$\fontsize{50}{60}B_q$' is not rejected by the interpreter, but makes no change to the output -- not even to drop something in that is then clipped. The output is as-if the \fontsize were not present in each case I tested.

This is not the same as the 'FontSize' option to text()

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