ade4 (version 1.01)

doubs: Pair of Ecological Tables

Description

This data set gives environmental variables, fish species and spatial coordinates for 30 sites.

Usage

data(doubs)

format

doubs is a list with 3 components.

1. mil

{is a data frame with 30 rows (sites) and 11 environmental variables.} poi{is a data frame with 30 rows (sites) and 27 fish species.} xy{is a data frame with 30 rows (sites) and 2 spatial coordinates.}

source

Verneaux, J. (1973) Cours d'eau de Franche-Comt� (Massif du Jura). Recherches �cologiques sur le r�seau hydrographique du Doubs. Essai de biotypologie. Th"se d'�tat, Besan�on. 1--257

Examples

data(doubs)
pca1 <- dudi.pca(doubs$mil, scan = FALSE)
pca2 <- dudi.pca(doubs$poi, scale = FALSE, scan = FALSE)
coiner1 <- coinertia(pca1, pca2, scan = FALSE)
par(mfrow = c(3,3))
s.corcircle(coiner1$aX)
s.value(doubs$xy, coiner1$lX[,1])
s.value(doubs$xy, coiner1$lX[,2])
s.arrow(coiner1$c1)
s.match(coiner1$mX, coiner1$mY)
s.corcircle(coiner1$aY)
s.arrow(coiner1$l1)
s.value(doubs$xy, coiner1$lY[,1])
s.value(doubs$xy, coiner1$lY[,2])
par(mfrow = c(1,1))