doubs {ade4}R Documentation

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.

    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-Comté (Massif du Jura).
Recherches écologiques sur le réseau hydrographique du Doubs. Essai de biotypologie.
Thèse d'état, Besançon. 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])

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