Hello
This is easy, you can use the function mean directly, you only need to indicate the dimension you want the mean to be calculated
a = mean(b,3);
Normally when you use mean with only one argument, it will calculate the mean over the columns, or if you want the mean of all elements you can do it like this
a = mean (b(:));
Notice that you can also do the same with maximum or minimum but the syntax is slightly different:
a = max(b,[ ],3);
Hope this helps. If you need anything else, let me know.
