Package: forestSAS 2.0.4

forestSAS: Forest Spatial Structure Analysis Systems

Recent years have seen significant interest in neighborhood-based structural parameters that effectively represent the spatial characteristics of tree populations and forest communities, and possess strong applicability for guiding forestry practices. This package provides valuable information that enhances our understanding and analysis of the fine-scale spatial structure of tree populations and forest stands. Reference: Yan L, Tan W, Chai Z, et al (2019) <doi:10.13323/j.cnki.j.fafu(nat.sci.).2019.03.007>.

Authors:Zongzheng Chai [aut, cre]

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forestSAS/json (API)

# Install 'forestSAS' in R:
install.packages('forestSAS', repos = c('https://zongzheng.r-universe.dev', 'https://cloud.r-project.org'))
Datasets:
  • tree.ppp - Sample data for analizing the forest spatial structure.
  • treecom_example - Example data for analizing the forest community.
  • treedata - Sample data for analizing the forest spatial structure.

On CRAN:

This package does not link to any Github/Gitlab/R-forge repository. No issue tracker or development information is available.

1.38 score 24 scripts 585 downloads 22 exports 20 dependencies

Last updated 3 months agofrom:6123736d35. Checks:1 OK, 7 NOTE. Indexed: yes.

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Doc / VignettesOKFeb 10 2025
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R-4.5-macNOTEFeb 10 2025
R-4.5-linuxNOTEFeb 10 2025
R-4.4-winNOTEFeb 10 2025
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R-4.3-macNOTEFeb 10 2025

Exports:addmark.pppbuffercrowdingdifferdominanceexpandedgefsasN4ideallist_to_matrixminglingnnanglennidnnIndexnnoverlapopt_spastrpvrebuild.pppshrinkedgesimtreecomspastrstoreydvduniform.angle

Dependencies:abinddeldirgoftestlatticeMatrixmgcvnlmepolycliprpartspatstatspatstat.dataspatstat.explorespatstat.geomspatstat.linnetspatstat.modelspatstat.randomspatstat.sparsespatstat.univarspatstat.utilstensor

Readme and manuals

Help Manual

Help pageTopics
Forest Spatial Structure Analysis SystemsforestSAS-package forestSAS
Add marks for a point patternaddmark.ppp
Identify the buffer zone in the point patternbuffer
A forest spatial structure index characterizing crowding degree.crowding
A forest spatial structure index characterizing differation degree of tree attributies.differ
A forest spatial structure index characterizing tree dominancedominance
Expand the edges for the point pattern with replication.expandedge
A body function to analyze the forest saptial structure.fsasN4
A forest spatial structure index characterizing distribution of ideal state for tree attributies.ideal
Converting list to matrixlist_to_matrix
A forest spatial structure index characterizing tree diversitymingling
Identify the angle among nearest neighboursnnangle
Find the id of nearest neighbour for each point.nnid
Get the marks of nearest neighbour in the point patternnnIndex
Crown overlap among nearest neighbournnoverlap
Optimal forest spatial structure indices.opt_spastr
Preference valuepv
Reestablishing an object of class "ppp"rebuild.ppp
Shrink the edges for the point patternshrinkedge
Simulated a forest community data.simtreecom
Computing forest spatial structure indices.spastr
Dividing the forest storeiesstoreydvd
Sample data for analizing the forest spatial structure.tree.ppp
Example data for analizing the forest community.treecom_example
Sample data for analizing the forest spatial structure.treedata
A forest spatial structure index characterizing tree spatial distribution patternsuniform.angle