NAME

       v.delaunay   - Creates a Delaunay triangulation from an input vector map containing points
       or centroids.

KEYWORDS

       vector, geometry, triangulation

SYNOPSIS

       v.delaunay
       v.delaunay --help
       v.delaunay  [-rl]  input=name   [layer=string]    output=name    [--overwrite]    [--help]
       [--verbose]  [--quiet]  [--ui]

   Flags:
       -r
           Use only points in current region

       -l
           Output triangulation as a graph (lines), not areas

       --overwrite
           Allow output files to overwrite existing files

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       input=name [required]
           Name of input vector map
           Or data source for direct OGR access

       layer=string
           Layer number or name (’-1’ for all layers)
           A  single  vector  map  can  be  connected  to  multiple  database tables. This number
           determines which table to use. When used with direct OGR  access  this  is  the  layer
           name.
           Default: -1

       output=name [required]
           Name for output vector map

DESCRIPTION

       v.delaunay  uses  an existing vector points map (input) to create a Delaunay triangulation
       vector map (output).

       Delaunay triangulation example (red-yellow points are  the  data  points  from  which  the
       triangulation was generated):

EXAMPLE

       Commands  used with the North Carolina dataset to create the above figure (subset shown in
       figure).
       g.region n=220750 s=219950 w=638300 e=639000 -p
       v.delaunay input=elev_lid792_randpts output=elev_lid792_randpts_delaunay

REFERENCES

       Leonid Guibas and Jorge  Stolfi,  (1985).  Primitives  for  the  Manipulation  of  General
       Subdivisions and the Computation of Voronoi Diagrams, ACM Transactions on Graphics, Vol 4,
       No. 2, April 1985, Pages 74-123

SEE ALSO

        v.voronoi, v.hull

AUTHORS

       Martin Pavlovsky, Google Summer of Code 2008, Student
       Paul Kelly, Mentor
       Based on "dct" by Geoff Leach, Department of Computer Science, RMIT.

       Last changed: $Date: 2014-01-07 00:15:11 +0100 (Tue, 07 Jan 2014) $

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