MATLAB: Create a new matrix of the old matrix

createMATLAB

CREATE THIS MATRIX B 5*9 CREATE B FROM A BY USING FOR STAEMENT
 0  0  0  0  1  2   3  4  5
 0  0  0  2  4  6   8  10 0 
 0  0  3  6  9  12  15 0  0             *B*
 0  4  8  12 16 20  0  0  0
 5  10 15 20 25 0   0  0  0
FROM MATRIX A 5*5 BELOW
1  2  3  4  5
2  4  6  8  10
3  6  9  12 15          *A*
4  8  12 16 20
5  10 15 20 25

Best Answer

   [m,n] = size(A);
   B = zeros(m,n+m-1);
   [I,J] = ndgrid(1:m,1:n);
   B(I+m*(J-I+m-1)) = A(I+m*(J-1));
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