How to create a 3D matrix in Octave

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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