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The dudi Class

In: Multivariate Analysis of Ecological Data with ade4

Author

Listed:
  • Jean Thioulouse

    (CNRS UMR 5558 – Université de Lyon, Laboratoire de Biométrie et Biologie Evolutive)

  • Stéphane Dray

    (CNRS UMR 5558 – Université de Lyon, Laboratoire de Biométrie et Biologie Evolutive)

  • Anne-Béatrice Dufour

    (CNRS UMR 5558 – Université de Lyon, Laboratoire de Biométrie et Biologie Evolutive)

  • Aurélie Siberchicot

    (CNRS UMR 5558 – Université de Lyon, Laboratoire de Biométrie et Biologie Evolutive)

  • Thibaut Jombart

    (London School of Hygiene and Tropical Medicine, Department of Infectious Disease Epidemiology)

  • Sandrine Pavoine

    (Muséum national déHistoire naturelle, CNRS, Sorbonne Université, Centre d’Ecologie et des Sciences de la Conservation (CESCO))

Abstract

This chapter explains the structure of the dudi (S3) class, which is the core of the ade4 package. All the multivariate data analysis methods available in ade4 can be described in the framework of the duality diagram and an object of class dudi is a translation of this mathematical structure in R. In this chapter, we explain what is an object of class dudi and which functions are used to generate and handle it. We detail all its elements, how to use it to analyse data tables, and how to export its elements to use them outside R.

Suggested Citation

  • Jean Thioulouse & Stéphane Dray & Anne-Béatrice Dufour & Aurélie Siberchicot & Thibaut Jombart & Sandrine Pavoine, 2018. "The dudi Class," Springer Books, in: Multivariate Analysis of Ecological Data with ade4, chapter 0, pages 29-51, Springer.
    • Handle: RePEc:spr:sprchp:978-1-4939-8850-1_3
    DOI: 10.1007/978-1-4939-8850-1_3
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