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In order to create a X*Y*Z-sized 3D matrix in Octave, use
A = zeros(X, Y, Z);
For example, to create a 5x6x3 matrix, use
A = zeros(5, 6, 3);
zeros() initializes the matrix to 0:
>> A = zeros(5, 6, 3); >> A A = ans(:,:,1) = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ans(:,:,2) = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ans(:,:,3) = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0