EXPAND

Replicate and tile each element of an array.

EXPAND(A,SZ), for array A and vector SZ replicates each element of A by SZ. The results are tiled into an array in the same order as the elements of A, so that the result is size: size(A).*SZ.

Therefore the number of elements of SZ must equal the number of dimensions of A, or in MATLAB syntax:

length(size(A))==length(SZ)

must be true.
The result will have the same number of dimensions as does A.
There is no restriction on the number of dimensions for input A.

Examples:

>> A = [1 2;3 4]
A =
1 2
3 4
>> expand(A,[2 1])
ans =
1 2
1 2
3 4
3 4
>> expand(A,[2 2])
ans =
1 1 2 2
1 1 2 2
3 3 4 4
3 3 4 4

Please email me if bugs are found in the code. Thanks.