atya {ade4} | R Documentation

## Genetic variability of Cacadors

### Description

This data set contains informations about genetic variability of Atya innocous and Atya scabra in Guadeloupe (France).

### Usage

    data(atya)

### Format

`atya` is a list with the following objects :

xy
  : a data frame with the coordinates of the 31 sites
gen
  : a data frame with 22 variables collected on 31 sites
neig
  : an object of class `neig`

### Source

Fievet, E., Eppe, F. and Dolédec, S. (2001) Etude de la variabilité morphométrique et génétique des populations de Cacadors (Atya innocous et Atya scabra) de l'île de Basse-Terre. Direction Régionale de L'Environnement Guadeloupe, Laboratoire des hydrosystèmes fluviaux, Université Lyon 1.

### Examples

    ## Not run:
    data(atya)
    if (require(pixmap, quiet = TRUE)) {
        atya.digi <- read.pnm(system.file("pictures/atyadigi.pnm",
            package = "ade4"))
        atya.carto <- read.pnm(system.file("pictures/atyacarto.pnm",
            package = "ade4"))
        par(mfrow = c(1,2))
        plot(atya.digi)
        plot(atya.carto)
        points(atya$xy, pch = 20, cex = 2)
    }
    if (require(maptools, quiet = TRUE) & require(spdep, quiet = TRUE)) {
        plot(neig2nb(atya$neig), atya$xy, col = "red", add = TRUE, lwd = 2)
        par(mfrow = c(1,1))
    }
    ## End(Not run)

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