 
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
 
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):
 
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
Delaunay triangulation (Wikipedia)
Martin Pavlovsky, Google Summer of Code 2008, Student
Paul Kelly, Mentor
Based on "dct" by Geoff Leach, Department of Computer Science, RMIT.
SOURCE CODE
  Available at:
  v.delaunay source code
  (history)
  Latest change: Tuesday Dec 17 20:17:20 2024 in commit: d962e90c026708a4815ea2b9f46c0e84c17de22d
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