kd-Tree implementation for Perl on top of Math::Vector::Real

 Math::Vector::Real::kdTree implements a kd-Tree data structure in Perl and
 common algorithms on top of it.
 .
 The following methods are provided:
  * new()
  * clone()
  * insert()
  * size()
  * at()
  * move()
  * find_nearest_vector()
  * find_farthest_vector()
  * k_means_start()
  * k_means_step()
  * k_means_loop()
  * k_means_assign()
  * find_in_ball()
  * ordered_by_proximity()