The ade4 Package - NexTag Supports Open Source Initiatives

196 pcaivortho
fa
l1
co
cor
a data frame with the loadings (Constraint Principal Components as linear combinations
of X
data frame with the Constraint Principal Components (CPC)
a data frame with the inner products between the CPC and Y
a data frame with the correlations between the CPC and X
Author(s)
Daniel Chessel
Anne B Dufour 〈dufour@biomserv.univ-lyon1.fr〉
References
Rao, C. R. (1964) The use and interpretation of principal component analysis in applied research.
Sankhya, A 26, 329–359.
Obadia, J. (1978) L’analyse en composantes explicatives. Revue de Statistique Appliquée, 24, 5–28.
Lebreton, J. D., Sabatier, R., Banco G. and Bacou A. M. (1991) Principal component and correspondence
analyses with respect to instrumental variables : an overview of their role in studies of
structure-activity and species- environment relationships. In J. Devillers and W. Karcher, editors.
Applied Multivariate Analysis in SAR and Environmental Studies, Kluwer Academic Publishers,
85–114.
Examples
data(rhone)
pca1