ade4 (version 1.01)

rhone: Physico-Chemistry Data

Description

This data set gives for 39 water samples a physico-chemical description with the number of sample date and the flows of three tributaries.

Usage

data(rhone)

format

rhone is a list of 3 components.

1. tab

{is a data frame with 39 water samples and 15 physico-chemical variables.} date{is a vector of the sample date (in days).} disch{is a data frame with 39 water samples and the flows of the three tributaries.}

source

Carrel, G., Barthelemy, D., Auda, Y. and Chessel, D. (1986) Approche graphique de l'analyse en composantes principales norm�e : utilisation en hydrobiologie. Acta Oecologica, Oecologia Generalis, 7, 189--203

Examples

data(rhone)
pca1 <- dudi.pca(rhone$tab, nf = 2, scann = FALSE)
rh1 <- reconst(pca1, 1)
rh2 <- reconst(pca1, 2)
par(mfrow = c(4,4))
par(mar = c(2.6,2.6,1.1,1.1))
for (i in 1:15) {
    plot(rhone$date, rhone$tab[,i])
    lines(rhone$date, rh1[,i], lwd = 2)
    lines(rhone$date, rh2[,i])
    scatterutil.sub(names(rhone$tab)[i], 2, "topright")
}
par(mfrow = c(1,1))