ref) Rを便利に使うためのおすすめパッケージ

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CRANのtask view... Analysis of Ecological and Environmental Dataも参考に。 インストールはinstall.package("Package", dependencies=TRUE)。Packageはインストールするパッケージ名に適宜変更のこと。依存するパッケージもインストールする場合にdependencies=TRUEとする（推奨）。

Package	About
agricolae	Statistical Procedures for Agricultural Research
ape	Analyses of Phylogenetics and Evolution
diversitree	comparative phylogenetic analyses of diversification
ecodist	Dissimilarity-based functions for ecological analysis
FD	Measuring functional diversity (FD) from multiple traits, and other tools for functional ecology
grofit	The package was developed to fit fit many growth curves obtained under different conditions
labdsv	Ordination and Multivariate Analysis for Ecology
lme4	Linear mixed-effects models using Eigen and S4
maptools	Tools for reading and handling spatial objects
nlme	Linear Nonlinear Mixed Effects Models
picante	R tools for integrating phylogenies and ecology
popbio	Construction and analysis of matrix population models
phytools	Phylogenetic Tools for comparative biology (and other things)
rjags	Bayesian graphical models using MCMC
smatr	(Standardised) Major Axis Estimation and Testing Routines
spatstat	Spatial Point Pattern analysis, model-fitting, simulation, tests
vegan	Community ecology package
YplantQMC	Plant architectural analysis with Yplant and QuasiMC

このへんのものが参考になると思います。各分野のパッケージと簡単な紹介がまとめてあります。

• Analysis of Ecological and Environmental Data
• Analysis of Spatial Data
• Bayesian Inference
• Meta-Analysis
• Phylogenetics, Especially Comparative Methods

Version: 2014-05-31