How to count no. of output result from a program

I am getting n no. of mean values of sub-matrices of a big matrix. Please tell me How I can count the no. of values.

Answer 1

[bym]

perhaps

x = mean(magic(4));
counts = numel(x)

is what you are after

Answer 2

[Image Analyst]

Here's one step in the process - read this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer