>> help repmat
REPMAT Replicate and tile an array.
B = repmat(A,M,N) creates a large matrix B consisting of an M-by-N
tiling of copies of A. The size of B is [size(A,1)*M, size(A,2)*N].
The statement repmat(A,N) creates an N-by-N tiling.
B = REPMAT(A,[M N]) accomplishes the same result as repmat(A,M,N).
B = REPMAT(A,[M N P ...]) tiles the array A to produce a
multidimensional array B composed of copies of A. The size of B is
REPMAT(A,M,N) when A is a scalar is commonly used to produce an M-by-N
matrix filled with A's value and having A's CLASS. For certain values,
you may achieve the same results using other functions. Namely,
REPMAT(NAN,M,N) is the same as NAN(M,N)
REPMAT(SINGLE(INF),M,N) is the same as INF(M,N,'single')
REPMAT(INT8(0),M,N) is the same as ZEROS(M,N,'int8')
REPMAT(UINT32(1),M,N) is the same as ONES(M,N,'uint32')
REPMAT(EPS,M,N) is the same as EPS(ONES(M,N))
Example:
repmat(magic(2), 2, 3)
repmat(uint8(5), 2, 3)
Class support for input A:
float: double, single
See also bsxfun, meshgrid, ones, zeros, nan, inf.
>> A = [1,2,3];
>> A = repmat(A,[3,1])
A =
1 2 3
1 2 3
1 2 3
>> B = [1;2;3];
>> B = repmat(B,[1,3])
B =
1 1 1
2 2 2
3 3 3