Let A=magic(16). Suppose I want to divide A into 2-by-2 sub-matrices and then sum them all into a 2-by-2 matrix. What should I do?
I started with
A=magic(16);
dim=2*ones(8,1);
B=mat2cell(A,dim,dim);
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Use the first part of [this great answer](http://stackoverflow.com/a/20337173/2586922) and then `sum(T, 3)` – Luis Mendo Mar 06 '15 at 07:58
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@LuisMendo Thanks. It is a cute solution. Problem solved. – Jie Wei Mar 06 '15 at 08:58
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1Glad it worked :-) I'm closing this as a duplicate then, so that the question doesn't appear as unanswered – Luis Mendo Mar 06 '15 at 09:21