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)

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