[pdal-commits] [PDAL/PDAL] f0acbe: Use signed int for clustering/grouping

[chambbj]

  Branch: refs/heads/issue-3079
  Home:   https://github.com/PDAL/PDAL
  Commit: f0acbe531b24953e0757cf056fda50fe8ce96470
      https://github.com/PDAL/PDAL/commit/f0acbe531b24953e0757cf056fda50fe8ce96470
  Author: Bradley J Chambers <brad.chambers at gmail.com>
  Date:   2020-05-21 (Thu, 21 May 2020)

  Changed paths:
    M filters/DBSCANFilter.cpp
    M filters/DBSCANFilter.hpp
    M filters/GroupByFilter.cpp
    M pdal/Dimension.json

  Log Message:
  -----------
  Use signed int for clustering/grouping

Modify DBSCAN to use the standard ClusterID dimension, which is now
defined as int64. The Groupby filter is similarly instructed to evaluate
int64. This allows clustering algorithms like DBSCAN to use -1 to
indicate noise.