Matlab: repeat every column sequentially n times [duplicate]

Answer 1

Just for the sake of completeness. If you want to duplicate along the rows, you can also use rectpulse().

A = [1,2,3;...
     4,5,6];

n = 3;

rectpulse(A, n);

gives you

1  2  3
1  2  3
1  2  3
4  5  6
4  5  6
4  5  6