superscript/subscript in labels not working

I wanted to use superscripts for x or y axis labels by using commands like:

ylabel('e^t')

However, the result is simply e^t, no matter how many times I tried. The '\' function for greek letters does not work either. Can anyone tell me what is wrong with my Matlab?

Thank you, Woonsup

Answer 1

[MHN]

x= 1:10;
y=2*x;
plot(x,y)
ylabel('e^t')

It works on Matlab R2014b, maybe the version that you are using does not support latex format.

[MHN]

Try this one (it is an example from Matlab's documentation), if it does not work then the problem is your Matlab version. If it works, then you should change the interpreter to latex for your code.

x = linspace(0,3);
  y = x.^2.*sin(x);
  plot(x,y)
  line([2,2],[0,2^2*sin(2)])
  str = '$$ \int_{0}^{2} x^2\sin(x) dx $$';
  text(0.25,2.5,str,'Interpreter','latex')
  annotation('arrow','X',[0.32,0.5],'Y',[0.6,0.4])

[Woonsup Choi]

Can you tell me how to "change the interpreter to latex for your code"? The suggested method (str=...) worked, but it is not exactly what I wanted, because the result looks like an equation. I am using R2015a.

[MHN]

If you are using R2015 I believe the default value is tex. Try this code:

x= 0:0.01:1;
y= exp(x);
plot(x,y)
ylabel('e^x', 'Interpreter','tex')

See http://www.mathworks.com/help/matlab/ref/ylabel.html#inputarg_Interpreter for more detail.

[Woonsup Choi]

This worked! Thank you.

[thewordneverfound]

Extremely helpful! Thank you!