forestSAS (version 1.0.1)

nnangle: Identify the angle among nearest neighbours

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.

References

None

Examples

# NOT RUN {
data(tree.ppp)
NNcoord<-nnIndex(tree.ppp,N=4,smark=c("x","y"),buffer=FALSE)
NNangle<-nnangle(NNcoord$nndist,NNcoord$nnx,NNcoord$nny)
NNangle
# }