ardeche {ade4}R Documentation

Fauna Table with double (row and column) partitioning

Description

This data set gives informations about species in different sites and dates.

Usage

data(ardeche)

Format

ardeche is a list with 6 components.

tab
is a data frame containing fauna table with 43 species (rows) and 35 sites (columns).
col.blocks
is a vector containing the number of columns in the 6 groups.
row.blocks
is a vector containing the number of rows in the 4 groups.
dat.fac
is a dates factor for samples (6 dates).
sta.fac
is a sites factor for samples (6 sites).
esp.fac
is a species order factor (Ephemeroptera, Plecoptera, Coleoptera, Trichoptera).

Source

Cazes, P., Chessel, D., and Dolédec, S. (1988) L'analyse des correspondances internes d'un tableau partitionné : son usage en hydrobiologie. Revue de Statistique Appliquée, 36, 39–54.

Examples

data(ardeche)
dudi1 <- dudi.coa(ardeche$tab, scan = FALSE)
s.class(dudi1$co, ardeche$dat.fac)
s.label(dudi1$co, clab = 0.5, add.p = TRUE)

[Package ade4 version 1.3-3 Index]