>> b = [1,2,3;4,5,6;7,8,9]
b =
1 2 3
4 5 6
7 8 9
>> R = 3;
>> C = 3;
>> repmat(b,R,C)
ans =
1 2 3 1 2 3 1 2 3
4 5 6 4 5 6 4 5 6
7 8 9 7 8 9 7 8 9
1 2 3 1 2 3 1 2 3
4 5 6 4 5 6 4 5 6
7 8 9 7 8 9 7 8 9
1 2 3 1 2 3 1 2 3
4 5 6 4 5 6 4 5 6
7 8 9 7 8 9 7 8 9
If you really want to use a slow loop, then try this:
S = size(b);
for r = (R-1)*S(1):-S(1):0
for c = (C-1)*S(2):-S(2):0
out(r+1:r+S(1),c+1:c+S(2)) = b;
end
end
