jv73 {ade4} | R Documentation

## K-tables Multi-Regions

### Description

This data set gives physical and physico-chemical variables, fish species, spatial coordinates about 92 sites.

### Usage

    data(jv73)

### Format

`jv73` is a list of 6 components.

morpho
  is a data frame with 92 sites and 6 physical variables.
phychi
  is a data frame with 92 sites and 12 physico-chemical variables.
poi
  is a data frame with 92 sites and 19 fish species.
xy
  is a data frame with 92 sites and 2 spatial coordinates.
contour
  is a data frame for mapping.
fac.riv
  is a factor distributing the 92 sites on 12 rivers.

### 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.

### Examples

    data(jv73)
    s.label(jv73$xy, contour = jv73$contour, incl = FALSE,
        clab = 0.75)
    s.class(jv73$xy, jv73$fac.riv, add.p = TRUE, cell = 0,
        axese = FALSE, csta = 0, cpoi = 0, clab = 1.25)

    w <- split(jv73$morpho, jv73$fac.riv)
    w <- lapply(w, function(x) t(dudi.pca(x, scann = FALSE)))
    w <- ktab.list.dudi(w)
    kplot(sepan(w), perm = TRUE, clab.r = 0, clab.c = 2, show = FALSE)

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