gives the locus of the q^(th) quantile of the bivariate data, where the data has been ordered using convex hulls centered on ConvexHullMedian[{{x11,x12},,{xn 1,xn 2}}].


  • To use , you first need to load the Multivariate Statistics Package using Needs["MultivariateStatistics`"].
  • returns a Polytope object, centered at ConvexHullMedian[{x1,,xn}].
  • Outlying vectors are removed by repeatedly peeling off layers of convex hulls from the data until at most a fraction q are left.
  • interpolates between the convex hulls of the points remaining before and after the last layer is removed.