nnangle: Identify the angle among nearest neighbours

In Zongzheng/forestSAS: An R package for forest spatial structure analysis systems

Description

Describes the degree of regularity in the spatial distribution of n trees that are nearest to a reference tree. Moving clockwise around reference tree,the angle was obtained between two adjacent neighbours.

Usage

nnangle(nndist, nnx, nny)

Arguments

nndist	Distance of nearest neighbour
nnx	x coordinate of nearest neighbour
nny	y coordinate of nearest neighbour

Value

The angles obtained between two adjacent neighbours.

Author(s)

Zongzheng Chai, [e-mail]

References

None

Examples

NNcoord<-nnIndex(tree.ppp,N=4,smark=c("x","y"),buffer=FALSE)
NNangle<-nnangle(NNcoord$nndist,NNcoord$nnx,NNcoord$nny)
NNangle

Zongzheng/forestSAS documentation built on May 10, 2019, 1:59 a.m.