The ade4 Package - NexTag Supports Open Source Initiatives

48 cca
Arguments
sitspe
sitenv
scannf
nf
a data frame for correspondence analysis, typically a sites x species table
a data frame containing variables, typically a sites x environmental variables
table
a logical value indicating whether the eigenvalues bar plot should be displayed
if scannf FALSE, an integer indicating the number of kept axes
Value
returns an object of class pcaiv. See pcaiv
Author(s)
Daniel Chessel
Anne B Dufour 〈dufour@biomserv.univ-lyon1.fr〉
References
Ter Braak, C. J. F. (1986) Canonical correspondence analysis : a new eigenvector technique for
multivariate direct gradient analysis. Ecology, 67, 1167–1179.
Ter Braak, C. J. F. (1987) The analysis of vegetation-environment relationships by canonical correspondence
analysis. Vegetatio, 69, 69–77.
Chessel, D., Lebreton J. D. and Yoccoz N. (1987) Propriétés de l’analyse canonique des correspondances.
Une utilisation en hydrobiologie. Revue de Statistique Appliquée, 35, 55–72.
See Also
cca in the package vegan
Examples
data(rpjdl)
millog