MATLAB: How to insert rows and colums of zeroes in this matrix ??? a=[1 2 3;4 5 6]

MATLAB

how to insert rows and colums of zeroes in this matrix ??? a=[1 2 3;4 5 6]

Best Answer

Here is one quick way to interlace columns and rows of zeros:
>> a=[1 2 3;4 5 6];
>> b = zeros(2*size(a));
>> b(1:2:end,1:2:end) = a
b =
   1   0   2   0   3   0
   0   0   0   0   0   0
   4   0   5   0   6   0
   0   0   0   0   0   0
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