ade4: rhone – R documentation

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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.

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 normée : 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$date, rh2[,i])
    ade4:::scatterutil.sub(names(rhone$tab)[i], 2, "topright")
}
par(mfrow = c(1,1))

ade4

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

v1.7-16

GPL (>= 2)

Authors

Stéphane Dray <stephane.dray@univ-lyon1.fr>, Anne-Béatrice Dufour <anne-beatrice.dufour@univ-lyon1.fr>, and Jean Thioulouse <jean.thioulouse@univ-lyon1.fr>, with contributions from Thibaut Jombart, Sandrine Pavoine, Jean R. Lobry, Sébastien Ollier, Daniel Borcard, Pierre Legendre, Stéphanie Bougeard and Aurélie Siberchicot. Based on earlier work by Daniel Chessel.

Initial release