voronoi: Voronoi polygons

In dismo: Species Distribution Modeling

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

## S4 method for signature 'ANY'
voronoi(x, ext, eps=1e-09, ...)

Arguments

x	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 documentation built on May 31, 2023, 6:15 p.m.