Indexing matrix in matlab

I have generated 3^n (n>1) matrices, then I want to compare them. How they can be indexed for the purpose of comparison. In fact I want to know distinct number of matrices and their frequencies.

[Oleg Komarov]

Your question is too vague...

Answer 1

[Oleg Komarov]

isequal

How are those matrices generated, what are their dimensions, what kind of comparison...

Answer 2

[Matt Fig]

You could put them into a cell array:

C = {magic(3) ones(3) zeros(3) magic(3) magic(3) ones(3)*6 zeros(3)};

isequal(C{1},C{2})
isequal(C{1},C{4})