This simple function returns an k-by-m matrix (where k is the number of n-combinations in set of m elements without repetition) which each row represents one of the all possible selectable combinations. Each column represents one of the m elements. If the i-th element of a row is a 1, that element is selected for that combination; otherwise, it will be a 0.
Eduardo de la Rosa (2020). CombMat(m,n) (https://www.mathworks.com/matlabcentral/fileexchange/67228-combmat-m-n), MATLAB Central File Exchange. Retrieved .