Putting different matrices in a shell in MATLAB?

Question

I have some matrices with different sizes but same dimensions, how can I put them all in a mother object so that e.g. A[B] recalls matrix B and A[C] recalls matrix C etc.

Answer 1

Easiest way is to use cell array. If you have matrices A, B and C that all have different sizes you can put them into one cell array using:

my_cell_array = {A,B,C};

And accessing third index in matrix B:

my_cell_array{2}(3)

You can also use structs:

my_struct.matrix_A = A;

my_struct.matrix_B = B;

my_struct.matrix_C = C;

Now you could access first index in matrix A using:

my_struct.matrix_A(1)

or by using dynamic fieldnames:

my_struct.('matrix_A')(1) %actually im not so sure about this :) check Doug's blogpost

Keep in mind that it might not be very memory efficient to use cell arrays or structs. There is probably more information about memory issues somewhere.