How to add specific y-value in y-axis of plot

Hello, I have the following graph which includes a waveform and its mean. Now, I want to add a value in the y-axis that directly corresponds to the mean, as highlighted below.

Is there a way to do this?

Answer 1

[the cyclist]

You could use either the text or annotation function to do that.

Here is an example using text:

rng default

x = rand(5,1);
meanx = mean(x);

figure
plot(x)
yline(meanx,'r')
text(0.6,meanx,sprintf('%6.2f',meanx))

[Zeyad Elreedy]

Is there a way to actually add this value to the y-axis, i.e. embedded in it, without doing it as a text?

[the cyclist]

Yes, you could do something like this:

rng default

x = rand(5,1);
meanx = mean(x);

figure
plot(x)
yline(meanx)

set(gca,'YTick',sort([0.1 : 0.1 : 1, meanx]))

I did the sort(), because the ticks have to be in ascending order, and I think that is probably the easiest way.

You could do something more clever with

set(gca,'YTickLabel',<formatted labels here>)

if the higher precision for the mean is a problem.

[Zeyad Elreedy]

Great, thank you!