Published by the Foundation for Open Access Statistics Editors-in-chief: Bettina Grün, Torsten Hothorn, Edzer Pebesma, Achim Zeileis    ISSN 1548-7660; CODEN JSSOBK
Authors: Stéphane Dray, Anne-Béatrice Dufour
Title: The ade4 Package: Implementing the Duality Diagram for Ecologists
Abstract: Multivariate analyses are well known and widely used to identify and understand structures of ecological communities. The ade4 package for the R statistical environment proposes a great number of multivariate methods. Its implementation follows the tradition of the French school of "Analyse des Donnees" and is based on the use of the duality diagram. We present the theory of the duality diagram and discuss its implementation in ade4. Classes and main functions are presented. An example is given to illustrate the ade4 philosophy.

Page views:: 10269. Submitted: 2007-02-13. Published: 2007-09-30.
Paper: The ade4 Package: Implementing the Duality Diagram for Ecologists     Download PDF (Downloads: 8017)
ade4_1.4-3.tar.gz: R source package Download (Downloads: 2599; 1MB) v22i04.R: R example code from the paper Download (Downloads: 2476; 463B)

DOI: 10.18637/jss.v022.i04

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Paper: Creative Commons Attribution 3.0 Unported License
Code: GNU General Public License (at least one of version 2 or version 3) or a GPL-compatible license.