How to display the value of output on plot?

My output is Error_x. Is their any way that MATLAB displays the value of output on plot? Like thethe R^2 In the given imagee.

Error_x(count)=sqrt(error)/sqrt(DN);
end
figure
hold on
plot(Error_x,'s-r')

Answer 1

[KSSV]

Read about text. With this function, you can specify the string str by providing location (x,y). At this position (x,y) you can display a string str.

https://in.mathworks.com/help/matlab/ref/text.html

[Heya :)]

What if i don't know the value of output?

[KSSV]

Whay you want to display if you don't know what to display?

Okay, use plot and show up a marker. :)

[Heya :)]

No, i mean that MATLAB should first calculate the value of output and display it on the figure.

[Heya :)]

Like the R^2 in the figure given below.

[KSSV]

With the data in hand ..you can find R^2 and you can use text or annotate. Also after plotting you can go to edit and insert a text box manually.

Answer 2

[Walter Roberson]

You can use text() or you can use annotate() . I would suggest that text() is much easier to use for this purpose.

You could also build the value into the title() of the plot, of course.

Your output appears to be a vector, so it is not immediately clear what output you want to display.

[Heya :)]

Yes my output is a vector. Will it display the value if we don't give the value of output outselves. I mean will it display the value of outpit automatically on the plot?