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Hexer - Hexbin density and boundary generation

Hexer is a LGPL C++ library that provides some classes for generating hexbin density surfaces and multipolygon boundaries for large point sets. I use the code for generating boundary polygons of large LiDAR collections, but it is useful in other contexts.

Hexer supports two operations at this time, density and boundary. You use hexer through the curse command:

[howardbutler@ardere hexer (master)]$ ./bin/curse --help
--------------------------------------------------------------------
    curse (hexer 1.0.0 at revision eca953 with GDAL 1.10dev)
--------------------------------------------------------------------

Command:
  --input arg           Input point set to curse
  --command arg         Command to run on points ('boundary' or 'density')
  --output arg          Specify an OGR-compatible output filename to write
                        boundary. stdout used if none specified.

Basic:
  -h [ --help ]         This help message
  --version             Show version info

Boundary:
  --edge arg (=0)       Edge distance of hexagon
  --count arg (=0)      Number of points that must be in polygon for it to be
                        positive space

For more information, see the full documentation for hexer at:
 http://github.com/hobu/hexer
$ curse boundary mypointfile.shp --output myboundary.shp
$ curse density mylasfile.las --output myhexagons.shp --edge 100

Serpent Mound Hexbins

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LAS and OGR hexagonal density and boundary surface generation

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