Build a matrix of indices of elements hat will be ommitted, randomly drawn among a whole set of elements.
build_random_matrix(nbIter = 1, seed = NULL,
rm.number = 0, rm.number.max = 0)
an integer, that indicates the number of random drawing to do.
an integer, that fixes a seed for random drawing.
an integer, that indicates the number of elements to randomly remove.
an integer, that indicates the maximum number of elements among which the elements to remove are randomly drawn.
a matrix of indices, of dimensions nbIter
* rm.number
.
Each line (each set of indices) of the matrix is unique, different from other lines of the matrix.