inertia.dudi: Statistics of inertia in a one-table analysis

In ade4: Analysis of Ecological Data : Exploratory and Euclidean Methods in Environmental Sciences

Description

Prints of the statistics of inertia in a one-table analysis

Usage

inertia.dudi(dudi, row.inertia = FALSE, col.inertia = FALSE)

Arguments

dudi	a duality diagram, object of class dudi
row.inertia	if TRUE, returns the statistics of the decomposition of inertia for the rows
col.inertia	if TRUE, returns the statistics of the decomposition of inertia for the columns

Details

Contributions are printed in 1/10000 and the sign is the sign of the coordinate

Value

a list containing :

TOT	repartition of the total inertia between axes
row.abs	absolute contributions of the decomposition of inertia for the rows
row.rel	relative contributions of the decomposition of inertia for the rows
row.cum	cumulative relative contributions of the decomposition of inertia for the rows
col.abs	absolute contributions of the decomposition of inertia for the columns
col.rel	relative contributions of the decomposition of inertia for the columns
col.cum	cumulative relative contributions of the decomposition of inertia for the columns

Author(s)

Daniel Chessel
Anne B Dufour [e-mail]

References

Lebart, L., Morineau, A. and Tabart, N. (1977) Techniques de la description statistique, méthodes et logiciels pour la description des grands tableaux, Dunod, Paris, 61–62.

Volle, M. (1981) Analyse des données, Economica, Paris, 89–90 and 118

Lebart, L., Morineau, L. and Warwick, K.M. (1984) Multivariate descriptive analysis: correspondence and related techniques for large matrices, John Wiley and Sons, New York.

Greenacre, M. (1984) Theory and applications of correspondence analysis, Academic Press, London, 66.

Rouanet, H. and Le Roux, B. (1993) Analyse des données multidimensionnelles, Dunod, Paris, 143–144.

Tenenhaus, M. (1994) Méthodes statistiques en gestion, Dunod, Paris, p. 160, 161, 166, 204.

Lebart, L., Morineau, A. and Piron, M. (1995) Statistique exploratoire multidimensionnelle, Dunod, Paris, p. 56,95-96.

Examples

data(housetasks)
coa1 <- dudi.coa(housetasks, scann = FALSE)
inertia.dudi(coa1, col = TRUE, row = FALSE)$col.rel

Example output

                  Axis1     Axis2
Wife         80.1875947 -15.24482
Alternating   0.4779897 -10.51016
Husband     -77.2026244 -20.75420
Jointly      -2.0705858  97.72939

ade4 documentation built on May 2, 2019, 5:50 p.m.