These functions take a numeric matrix x where each column corresponds to
a point and return a logical vector. The i-th position of the latter is
TRUE if the i-th point is dominated by at least one other point for
dominated and FALSE for nonDominated.
dominated(x)nondominated(x)
[logical]
[matrix]
Numeric (d x n) matrix where d is the number of objectives and n is the
number of points.