phylopath: Easy phylogenetic path analysis in R

Confirmatory path analysis allows researchers to evaluate and compare causal models using observational data. This tool has great value for comparative biologists since they are often unable to gather experimental data on macro-evolutionary hypotheses, but is cumbersome and error-prone to perform. I...

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Main Author: Wouter van der Bijl
Format: Article
Language:English
Published: PeerJ Inc. 2018-04-01
Series:PeerJ
Subjects:
Online Access:https://peerj.com/articles/4718.pdf
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author Wouter van der Bijl
author_facet Wouter van der Bijl
author_sort Wouter van der Bijl
collection DOAJ
description Confirmatory path analysis allows researchers to evaluate and compare causal models using observational data. This tool has great value for comparative biologists since they are often unable to gather experimental data on macro-evolutionary hypotheses, but is cumbersome and error-prone to perform. I introduce phylopath, an R package that implements phylogenetic path analysis (PPA) as described by von Hardenberg & Gonzalez-Voyer (2013). In addition to the published method, I provide support for the inclusion of binary variables. I illustrate PPA and phylopath by recreating part of a study on the relationship between brain size and vulnerability to extinction. The package aims to make the analysis straight-forward, providing convenience functions, and several plotting methods, which I hope will encourage the spread of the method.
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spelling doaj.art-6e1ae93355be464984f366dafb7576f22023-12-03T07:15:06ZengPeerJ Inc.PeerJ2167-83592018-04-016e471810.7717/peerj.4718phylopath: Easy phylogenetic path analysis in RWouter van der BijlConfirmatory path analysis allows researchers to evaluate and compare causal models using observational data. This tool has great value for comparative biologists since they are often unable to gather experimental data on macro-evolutionary hypotheses, but is cumbersome and error-prone to perform. I introduce phylopath, an R package that implements phylogenetic path analysis (PPA) as described by von Hardenberg & Gonzalez-Voyer (2013). In addition to the published method, I provide support for the inclusion of binary variables. I illustrate PPA and phylopath by recreating part of a study on the relationship between brain size and vulnerability to extinction. The package aims to make the analysis straight-forward, providing convenience functions, and several plotting methods, which I hope will encourage the spread of the method.https://peerj.com/articles/4718.pdfPhylogenetic path analysisEvolutionPath analysisComparative methodsR package
spellingShingle Wouter van der Bijl
phylopath: Easy phylogenetic path analysis in R
PeerJ
Phylogenetic path analysis
Evolution
Path analysis
Comparative methods
R package
title phylopath: Easy phylogenetic path analysis in R
title_full phylopath: Easy phylogenetic path analysis in R
title_fullStr phylopath: Easy phylogenetic path analysis in R
title_full_unstemmed phylopath: Easy phylogenetic path analysis in R
title_short phylopath: Easy phylogenetic path analysis in R
title_sort phylopath easy phylogenetic path analysis in r
topic Phylogenetic path analysis
Evolution
Path analysis
Comparative methods
R package
url https://peerj.com/articles/4718.pdf
work_keys_str_mv AT woutervanderbijl phylopatheasyphylogeneticpathanalysisinr