[pdal-commits] [PDAL/PDAL] bd45da: Improvements to filters.litree

[chambbj]

  Branch: refs/heads/issue-3518-litree
  Home:   https://github.com/PDAL/PDAL
  Commit: bd45da194052c7a50c50edaa1398f5a211a2698b
      https://github.com/PDAL/PDAL/commit/bd45da194052c7a50c50edaa1398f5a211a2698b
  Author: Bradley J Chambers <brad.chambers at gmail.com>
  Date:   2021-08-27 (Fri, 27 Aug 2021)

  Changed paths:
    M doc/stages/filters.litree.rst
    M filters/LiTreeFilter.cpp
    M filters/LiTreeFilter.hpp

  Log Message:
  -----------
  Improvements to filters.litree

- roughly 8x speedup by eliminating repetitive KDtree builds and
  automatically assigning points to Ni if they are a set distance away
  (laterally) from the apex of the current tree Pi

- update docs -- descending sort of HeightAboveGround required