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)