highlight plot with circle

I have a ber plot and I want to highlight this plot with a circle or any eliptical shape indicating (M×N).

[Awais Saeed]

What do you mean by higlighting with circle. Do you mean like this

[mudasir ahmad sheikh]

No! Please see the attached figure

Answer 1

[Awais Saeed]

I do not know if its possible programmatically but you can acheive this using the Insert option of figure window

[mudasir ahmad sheikh]

Thanks Awaise.

[Awais Saeed]

you are welcome.

Answer 2

[Image Analyst]

You can draw an ellipse if you know the center and radii:

https://matlab.fandom.com/wiki/FAQ#How_do_I_create_an_ellipse.3F

xCenter = 12.5;
yCenter = 10;
xRadius = 2.5;
yRadius = 8;
theta = 0 : 0.01 : 2*pi;
x = xRadius * cos(theta) + xCenter;
y = yRadius * sin(theta) + yCenter;
plot(x, y, 'LineWidth', 3);
axis square;
xlim([0 20]);
ylim([0 20]);
grid on;

If you have an existing plot, call hold on before plotting the ellipse so it doesn't blow away your prior plotted data.

[mudasir ahmad sheikh]

Thanks

[Image Analyst]

@mudasir ahmad sheikh, you're welcome. Also I'm attaching a bunch of ellipse demos that you may find fun or interesting. You can "Vote" for my answer if they help you.