1v.delaunay(1)                 Grass User's Manual                v.delaunay(1)
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NAME

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

10       vector, geometry, triangulation
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SYNOPSIS

13       v.delaunay
14       v.delaunay --help
15       v.delaunay [-rl] input=name  [layer=string]  output=name  [--overwrite]
16       [--help]  [--verbose]  [--quiet]  [--ui]
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18   Flags:
19       -r
20           Use only points in current region
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22       -l
23           Output triangulation as a graph (lines), not areas
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25       --overwrite
26           Allow output files to overwrite existing files
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28       --help
29           Print usage summary
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31       --verbose
32           Verbose module output
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34       --quiet
35           Quiet module output
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37       --ui
38           Force launching GUI dialog
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40   Parameters:
41       input=name [required]
42           Name of input vector map
43           Or data source for direct OGR access
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45       layer=string
46           Layer number or name (’-1’ for all layers)
47           A  single  vector map can be connected to multiple database tables.
48           This number determines which table to use. When  used  with  direct
49           OGR access this is the layer name.
50           Default: -1
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52       output=name [required]
53           Name for output vector map
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DESCRIPTION

56       v.delaunay  uses  an  existing  vector  points  map (input) to create a
57       Delaunay triangulation vector map (output).
58
59       Delaunay triangulation example (red-yellow points are the  data  points
60       from which the triangulation was generated):
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EXAMPLE

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

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

74        v.voronoi, v.hull
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AUTHORS

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

82       Available at: v.delaunay source code (history)
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84       Main index | Vector index | Topics index | Keywords index  |  Graphical
85       index | Full index
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87       © 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual
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91GRASS 7.8.2                                                      v.delaunay(1)
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