v.delaunay - Creates a Delaunay triangulation from an input vector
map containing points or centroids.
vector, geometry, triangulation
v.delaunay
v.delaunay --help
v.delaunay [-
rl]
input=
name
[
layer=
string]
output=
name [--
overwrite]
[--
help] [--
verbose] [--
quiet] [--
ui]
- -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
- 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
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
v.voronoi, v.hull
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: 2015-08-10 15:56:03 +0200 (Mon, 10 Aug 2015) $
Available at: v.delaunay source code (history)
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