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forestSAS

An R package for forest spatial structure analysis systems.

In recent years, there has been considerable interest in a group of neighborhood-based structural parameters that properly express the spatial structure characteristics of tree populations and forest communities and have strong operability for guiding forestry practices.forestSAS package provide more important information and allow us to better understand and analyze the fine-scale spatial structure of tree populations and stand structure.

Installation

The development version from github:

# install.packages("devtools")
devtools::install_github("Zongzheng/forestSAS")
library(spatstat)
library(forestSAS)

##Citation

Chai ZZ.2016.forestSAS:An R package for forest spatial structure analysis systems.URL:https://github.com/Zongzheng/forestSAS.

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Version

Install

install.packages('forestSAS')

Monthly Downloads

19

Version

1.0.1

License

GPL (>= 2)

Maintainer

Last Published

January 11th, 2019

Functions in forestSAS (1.0.1)

rebuild.ppp

Reestablishing an object of class "ppp"
shrinkedge

Shrink the edges for the point pattern
list_to_matrix

Converting list to matrix
pv

Preference value
nnoverlap

Crown overlap among nearest neighbour
treedata

Sample data for analizing the forest spatial structure.
uniform.angle

A forest spatial structure index characterizing tree spatial distribution patterns
storeydvd

Dividing the forest storeies
tree.ppp

Sample data for analizing the forest spatial structure.
nnIndex

Get the marks of nearest neighbour in the point pattern
mingling

A forest spatial structure index characterizing tree diversity
nnangle

Identify the angle among nearest neighbours
nnid

Find the id of nearest neighbour for each point.
crowding

A forest spatial structure index characterizing crowding degree.
dominance

A forest spatial structure index characterizing tree dominance
buffer

Identify the buffer zone in the point pattern
addmark.ppp

Add marks for a point pattern
ideal

A forest spatial structure index characterizing distribution of ideal state for tree attributies.
expandedge

Expand the edges for the point pattern with replication.
fsasN4

A body function to analyze the forest saptial structure.
forestSAS-package

forestSAS
differ

A forest spatial structure index characterizing differation degree of tree attributies.