STK_MINDIST computes the separation distance of a set of points

 CALL: D = stk_mindist(X)

    computes the separation distance D of X. More precisely, if X is an
    n x d matrix, then

       D = min_{1 <= i < j <= n} norm(X(i,:) - X(j,:)),

    where norm(.) denotes the Euclidean norm in R^d.

 See also: stk_dist, stk_filldist