dismo: voronoi – R documentation

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voronoi

Voronoi polygons

Description

Create Voronoi polygons for a set of points. (These are also known Thiessen polygons, and Nearest Neighbor polygons; and the technique used is referred to as Delauny triangulation.)

Usage

voronoi(xy, ext, eps=1e-09, ...)

Arguments

`xy`	SpatialPoints* or two column matrix with x and y coordinates
`ext`	Extent. Can be used to set the corners of the rectangular window enclosing the triangulation. The default is the data range plus 10 percent. See `deldir`
`eps`	Numerical tolerance used in triangulation. See `deldir`
`...`	Additional arguments (none)

Value

SpatialPolygonsDataFrame

Author(s)

This method is based on the link[deldir]{deldir} function by Rolf Turner and code by Carson Farmer

Examples

# points
p <- matrix(c(17, 42, 85, 70, 19, 53, 26, 84, 84, 46, 48, 85, 4, 95, 48, 54, 66, 74, 50, 48, 
      28, 73, 38, 56, 43, 29, 63, 22, 46, 45, 7, 60, 46, 34, 14, 51, 70, 31, 39, 26), ncol=2)
	  
v <- voronoi(p)
v

dismo

Species Distribution Modeling

v1.3-3

GPL (>= 3)

Authors

Robert J. Hijmans, Steven Phillips, John Leathwick and Jane Elith

Initial release

2020-11-16