How can i make a common legend (title) for subplots?

As you see in the img I have the same legend for the four subplot.

How can I position it only once outside the subplot? Maybe to the right of subplots or to the left or at centre (iterazione means iteration).

Then, I know that I can use a title for each subplot but how can I use just only title for the whole figure?

Thank you

[Amin Fadlalla]

I hope you provide a running code to test your case and try to help you.

Answer 1

[Star Strider]

Only call the legend in subplot(2,2,2), and not the others, and use -1 as the position indicator. That will put it outside (to the right) of the second subplot in the first row.

[zohar]

+1

Answer 2

[Image Analyst]

Try suplabel: http://www.mathworks.com/matlabcentral/fileexchange/7772-suplabel

[Fabio]

My matlab version is 7.10 (R2010a), it hasn't suplabel, have you got other solution?

Thank you

[Image Analyst]

It's not a built-in function, so whatever version you have does not matter. It's something a user wrote and uploaded. You need to download it to some folder on your search path.