ade4 (version 1.7-23)

within: Within-Class Analysis

Description

Outputs and graphical representations of the results of a within-class analysis.

Usage

# S3 method for within
plot(x, xax = 1, yax = 2, ...) 
# S3 method for within
print(x, ...)
# S3 method for witcoi
plot(x, xax = 1, yax = 2, ...)
# S3 method for witcoi
print(x, ...)
# S3 method for within
summary(object, ...)

Arguments

x,object

an object of class within or witcoi

xax

the column index for the x-axis

yax

the column index for the y-axis

...

further arguments passed to or from other methods

Author

Daniel Chessel
Anne-Béatrice Dufour
Stéphane Dray

References

Benzécri, J. P. (1983) Analyse de l'inertie intra-classe par l'analyse d'un tableau de correspondances. Les Cahiers de l'Analyse des données, 8, 351--358.

Dolédec, S. and Chessel, D. (1987) Rythmes saisonniers et composantes stationnelles en milieu aquatique I- Description d'un plan d'observations complet par projection de variables. Acta Oecologica, Oecologia Generalis, 8, 3, 403--426.

See Also

wca.dudi, wca.coinertia

Examples

data(meaudret)
pca1 <- dudi.pca(meaudret$env, scan = FALSE, nf = 4)
wit1 <- wca(pca1, meaudret$design$site, scan = FALSE, nf = 2)

if(adegraphicsLoaded()) {
  g1 <- s.traject(pca1$li, meaudret$design$site, psub.text = "Principal Component Analysis", 
    plines.lty = 1:length(levels(meaudret$design$site)), plot = FALSE)
  g2 <- s.traject(wit1$li, meaudret$design$site, psub.text = 
    "Within site Principal Component Analysis", 
    plines.lty = 1:length(levels(meaudret$design$site)), plot = FALSE)
  g3 <- s.corcircle (wit1$as, plot = FALSE)
  G <- ADEgS(list(g1, g2, g3), layout = c(2, 2))
  
} else {
  par(mfrow = c(2, 2))
  s.traject(pca1$li, meaudret$design$site, sub = "Principal Component Analysis", csub = 1.5)
  s.traject(wit1$li, meaudret$design$site, sub = "Within site Principal Component Analysis", 
    csub = 1.5)
  s.corcircle (wit1$as)
  par(mfrow = c(1, 1))
}

plot(wit1)