I have a set e.g.,
set={[1],[1,2,3],[1,2,3],[1]}
However, I need to repeat [1,2,3,..] several times. Lets say I have [1:r] and need repeat the same for n times. Then, it should be in the following form:
set={[1],[1,2,..r], ... ,[1,2,..r],[1]}
I tried to use
repmat([1:3],1,3)
% 1 2 3 1 2 3 1 2 3
which has repeated elements but in the same array. I need it as 3D format.
Rather than using repmat([1:3], 1, 3) which will repeat 1:3 3 times within the same numeric array, you want to pass the cell array element as the first input to repmat (note the {} surrounding the array).
repmat({1:3}, 1, 3)
% { [1 2 3], [1 2 3], [1 2 3] }
To create your array from an initial cell array, you could do something like this
r = 3; n = 3;
initial = {1, 1:r, 1};
final = [initial(1), repmat(initial(2), 1, n), initial(3)];
% { [1], [1 2 3], [1 2 3], [1 2 3], [1] }