how to write a fraction in xlabel.

dear all, I want to write a fraction a over b in the xlabel. How to do that? thanks

if true
%
figure (1)
fig =figure(1);
plot(t,real(y)'-x')
title('Mutual inductance M at frequency of 0.159 GHz','FontSize',18,'FontWeight','bold')
xlabel ??????????????????????????????????????????????????????????????????????????????????????????
ylabel('Inductance (nH)','FontSize',18,'FontWeight','bold')
set(fig,'position',[500 300 800 600]);
grid on

end

[hamed shorakaei]

Use the following style:

xlabel('$\displaystyle\frac{W}{h}$','interpreter','latex')

[Panagiotis Papias]

I wanted to take a moment and thank you for this comment, now I feel that is nicer latex being able to be used as an "add on" in Matlab.

[Lars Abrahamsson]

I miss the possibility to write

xlabel('$\displaystyle\frac{\text{W}}{\text{h}}$','interpreter','latex')

for example. But that is not possible it seems. Mathematical font is not wanted for "Watt per hour" for example.

Answer 1

[Star Strider]

The easy way:

xlabel('^{a}/_{b}')

The more difficult way requires you to call the 'latex' interpreter and use LaTeX commands. See the link for the LaTeX documentation.

Answer 2

[Reko Hynönen]

An old topic, but I've got an improved answer.

Star Strider's answer will work but it will look a bit silly. But like they suggest, you could use LaTeX interpreter instead.

Using LaTeX interpreter, you could accomplish this by writing:

xlabel('$\frac{a}{b}$','Interpreter','latex')

\frac{a}{b} is a LaTeX syntax for fractions. It will write 'a' to the numerator and 'b' to denominator. '$' symbols at the beginning and the end are necessary to interpret the expression in LaTeX Math mode, that interprets \frac correctly.

[Viesturs Veckalns]

I am using

c_f4_3D = colorbar
c_f4_3D.Label.String = '$\frac{E}{K} [GeV]$'
c_f4_3D.Label.Interpreter = 'latex';

and get a warning:

Warning: Error updating Text.

String must have valid interpreter syntax:
$\frac{E}{K} [GeV]$

What is wrong?

[Jaehong Jeong]

You should change the interpreter first before using the latex syntax ;) Just swap 2 lines, then the warning message will be gone.

[Lars Abrahamsson]

I noticed that the LaTeX intepretor does not accept for example

$\frac{\text{m}^3}{s}$

Then I get this error message

And if I cannot use

\text

is has to be:

ylabel('Spill [$\frac{m^3}{s}$]','Interpreter','latex')

and then it will be rather ugly:

Any comments on this?

[Simon Keegan]

@Lars Abrahamsson Have you found a solution for your problem? I am stuck with the same problem

[Mikhail Skalyga]

Thank you!

[Khalid Alshumayri]

Any update ? I want to use

xlabel(' sin($\frac{2\times\pi}{17}$) + 2\times\pi\times/17) ')

[Star Strider]

@Khalid Alshumayri —

Possibly this —

xlabel(' sin($\frac{2\times\pi}{17}$) + $\frac{2\times\pi}{17}$ ', 'Interpreter','latex')

.

[Lars Abrahamsson]

@Simon Keegan unfortunately no solution. I even forgot I commented on this thread earlier ...

[Lars Abrahamsson]

@Simon Keegan Actually, I think I found something like a solution

xlabel('Discharge $\displaystyle \frac{\rm m^3}{\rm s}$', 'Interpreter','latex')

[Simon Keegan]

Great @Lars Abrahamsson. In MatLab Answers we trust! :)

Maybe I'll have a similiar case in future