Balance-dendrogram. A new routine of CoDaPack

  • Authors:

  • S. Thió-Henestrosa;J. J. Egozcue;V. Pawlowsky-Glahn;L. í. Kovács;G. P. Kovács

  • Affiliations:

  • Dept. d'Informítica i Matemítica Aplicada,Campus Montilivi, Universitat de Girona, E-17071 Girona, Spain;Dept. de Matemítica Aplicada III, Universitat Politècnica de Catalunya, Barcelona, Spain;Dept. d'Informítica i Matemítica Aplicada,Campus Montilivi, Universitat de Girona, E-17071 Girona, Spain;Hungarian Geological Survey, P.O. Box 17, H-1440 Budapest, Hungary;Hungarian Geological Survey, P.O. Box 17, H-1440 Budapest, Hungary

  • Venue:
  • Computers & Geosciences
  • Year:
  • 2008

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Abstract

A statistical analysis of compositional data based on the Aitchison geometry of the simplex requires an appropriate basis for representing the data. A simple and intuitive way of building such a basis employs a sequential binary partition of the compositional vector. The partition, together with some statistical summaries of the coordinates, or balances, can be represented in a dendrogram-type graph. In this paper we introduce an implementation of this methodology inside CoDaPack, which is freeware. An example with real data illustrates the use of the Balance-Dendrogram routine.