Adding labels to plots with LaTeX syntax
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I was wanting to do something like this
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1485767/image.png)
But I'm not sure
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Answers (2)
Anton Kogios
on 18 Sep 2023
plot(0:.1:pi,sin(0:.1:pi))
text(pi/2,.9,'$$t = \frac{\pi}{2}$$', ...
'Interpreter','latex', ...
'FontSize',14, ...
'HorizontalAlignment','center')
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Star Strider
on 18 Sep 2023
In the text call, specify 'Interpreter','latex', however the more interesting part of this was (finally) figuring out how to correctly place the annotation objects.
This combines both of them —
x = linspace(-2, 1, 250);
y = 3.5*exp(-(x+1).^2*150);
figure
plot(x, y, '--k')
ylim([-1 4])
yline(0, '-k')
text(0, 3.5, '$\it{t=0}$', 'Interpreter','latex', 'FontSize',15, 'Horiz','center')
text(-1.5, 1.75,'$\alpha\_$', 'Interpreter','latex', 'FontSize',15, 'Horiz','center')
xs = @(x,pos,xlim) pos(3)*(x-min(xl))/diff(xl)+pos(1);
ys = @(y,pos,ylim) pos(4)*(y-min(yl))/diff(yl)+pos(2);
xl = xlim;
yl = ylim;
pos = gca().Position;
xs = @(x,pos,xlim) pos(3)*(x-min(xl))/diff(xl)+pos(1); % 'x' Annotation Position Function
ys = @(y,pos,ylim) pos(4)*(y-min(yl))/diff(yl)+pos(2); % 'y' Annotation Position Function
% Qy = ys([2.5 3.5],pos,ylim)
% Qx = xs([1 1]*-1.5,pos,xlim)
annotation('arrow', xs([-1.5 -1.5],pos,xlim), ys([1.5 0],pos,ylim))
annotation('arrow', xs([-1.5 -1.5],pos,xlim), ys([2.0 3.5],pos,ylim))
I am not certain what the other curves represent, so I did not draw them.
.
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