# Tilde character underneath a letter in Matlab charts

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I am trying to put a tilde underneath a letter in my ylabel on a chart in Matlab. I am using interpreter and latex to do it and i know the way to do it in Latex is \utilde. But Matlab does not seem to recognise this command, it does recognise \tilde, however.
Has anyone tried to put a character underneath a letter in Matlab for chart plots? How can I do this?!
Thanks!
Olivia

Abhisek Pradhan on 17 Oct 2019
ylabel('$\stackrel{a}{\tilde{}}$','Interpreter','latex');

Olivia Milton-thompson on 17 Oct 2019
Problem with that is the 'a' appears to be a superscript...
Doesn't stackrel create objects to be put on top of one another? I just need to have a normal sized letter with a tilde underneath.
Thank you!
Abhisek Pradhan on 18 Oct 2019
Is this what are you looking for
ylabel('$\stackrel{a}{\tilde{}}$','Interpreter','latex','FontSize',60);
set(get(gca,'ylabel'),'rotation',0);
Olivia Milton-thompson on 18 Oct 2019
No that second one is definitely not what I wanted, I don't want to rotate the axis or make the font bigger haha, just wanted a normal letter with a tilde underneath, not a superscript with a tilde underneath. But...
Your first answer has worked I think, just not in the way I expected it to and I'm not sure why it worked haha. Initially when I used your first code above, it just gave what it shows on the attachment (capture), with the a and tilde as a superscript. But I wanted to have it as a normal a with a tilde underneath, not a superscript.
But then I decided to just try and complete what I wanted to do using your original line of code and for some reason it worked, shown on the attachment (capture2). I needed the tilde underneath the i and it's done it. Does not make much sense to me as to why stackrel worked in this case and didnt keep it as a superscript, but that's fine, it's worked! Thanks!

Walter Roberson on 18 Oct 2019
If you do not need latex then use 'a' followed by U+0330. Unicode can be used for interpreter none or tex

Olivia Milton-thompson on 18 Oct 2019
That still didn't work, no tilde is appearing underneath the "a" and I can't see how I would be able to put text before the symbol with a tilde in this case. But not to worry, I've manage to botch it with the very first suggested answer
Walter Roberson on 18 Oct 2019
It works for me on Mac, R2019b. Which release and OS are you using?
Example of incorporating text and variables:
autilde =['a' hex2dec('0330')];
iter = 17;
ylabel( sprintf('%s%s%d', 'experiment #', autilde, iter))
Olivia Milton-thompson on 20 Oct 2019
Still can't see any tilde, sadly!
Using your code above, I get the picture shown on the attachment.
I'm using Windows, R2019a, so shouldnt be too wildly different to you!