Char not working properly ?

Hello

Acccording to internet the unicode for subscript e ( _{e} in Latex) is U2091 or 8337 in decimal.

char(8337)

ans = 'ₑ'

but on my machine it doesn't work.

Other unicode work but not this one. Does anybody know what I should check ?

I'm on window 11 and my laptop is in french if that helps.

[Dyuman Joshi]

I think that is how the symbol appears in the command window.

Though, if you see it in workspace, you will find that the symbol is correct. I've attached an image for reference.

[Adam Danz]

@Matteo Bonhomme, how do you plan on using ths character? Is the purpose to only display in the command window or should it display elsewhere such as a graphics text object?

[Matteo Bonhomme]

@Dyuman Joshi You're right even thought it doesn't work in the commmand window it works in the workspace

[Matteo Bonhomme]

@Adam Danz I want to display it in a uifigure textbox

With what Adam said I managed to do this

hFig=uifigure;
txa = uitextarea(hFig);
antenna_underscript="T"+[char(8336) char(8345) char(8348) char(8337) char(8345) char(8345) char(8336)];
txa.Value=antenna_underscript;
txa.FontName= 'Arial';
txa.FontSize=40;
txa.FontWeight='normal'

Wich gives me this

It's almost what I want. The "a" and "e" just look a little weird

I'm looking for that :

figure; text(.5, 0.5,"T_{antenna}")

[Dyuman Joshi]

Maybe changing the font is causing the issue. Can you try again without the font changes?

[Matteo Bonhomme]

I tried, it still doesn't work.

After doing some additionnal research, it looks like that's the best that unicode can do. The unicode character of the voyel are just not the same size. (found this cool website btw : https://www.unicodeit.net/ )

I read somewhere else on the forum that uitextarea does't accept interpreter so I don't think there's a way to fix that.

After doing some try I found a workaround where I put axes then put a textbox on the axes then hide the axes:

hFig=uifigure;
ax=uiaxes(hFig);
text(ax,0.5,0.5,"T_{antenna}",'FontSize', 40)
ax.Visible='off';

That's not answering my initial question but that's a satisfying work around

[Adam Danz]

I was able to reproduce these difference between results shown here and on my local machine. Clearly the encoding is not consistent between the Run feature and my local installation and there are differences between recent releases. There were changes to system encoding in 22a (release notes) but that does not explain these differences and I haven't had time to look deeper.

Subscripts codes references on wiki.

unidec = hex2dec({'2090','2099','209c','2091','2099','2099','2090'})

unidec = 7×1

8336 8345 8348 8337 8345 8345 8336

str = ['T', char(unidec')]

str = 'Tₐₙₜₑₙₙₐ'

text(0.5,0.5,str,'FontSize',24) 

Answer 1

[VBBV]

To display text on figure window, you should rather use uilabel function in place of uitextarea which produces same output as desired, This function also supports both latex and tex interpreters in contrast to former uitextarea function.

hFig=uifigure;
txa = uilabel(hFig); 
txa.Text ='T_{antenna}'
txa.Interpreter = 'tex'
txa.FontName= 'Arial';
txa.FontSize=40;
txa.FontWeight='normal'
txa.Position = [100 274 170 45]

Answer 2

[Sulaymon Eshkabilov]

To display in a figure is straightforward, e.g.:

figure; title(char(8337))
text(0.5, 0.5, ['This is the character:  ' char(8337)])

[Matteo Bonhomme]

This is how it comes out on my machine

It's like I have a different Unicode version locally

[Rik]

The whole point of Unicode is not to have these things happen, so this behavior should be considered a bug. Please report it.

[Matteo Bonhomme]

I just did it

I found a workaround so I'll stop looking into this issue but if someone understand what's happening I'm interested