MATLAB: QUESTION ON MATRIX RESHAPING

please reply as soon as possible

Respected Sir, Simply I want to know the process how this is done in matlab for higher order matrix—
[1 2 3                        [1 1 1 2 2 2 3 3 3 
 4 5 6         to              1 1 1 2 2 2 3 3 3           
 7 8 9 ]                       1 1 1 2 2 2 3 3 3 
                               4 4 4 5 5 5 6 6 6 
                               4 4 4 5 5 5 6 6 6
                               4 4 4 5 5 5 6 6 6
                               7 7 7 8 8 8 9 9 9
                               7 7 7 8 8 8 9 9 9
                               7 7 7 8 8 8 9 9 9]
how it can be done for higher order matrix?? Please Reply. Your's Faithfully
Arnab Chattaraj.

Best Answer

a = reshape(1:9,3,[])';
out = kron(a,ones(3));
or
out = repelem(A,3,3)
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