The ade4 Package - NexTag Supports Open Source Initiatives

ardeche 19
ardeche
Fauna Table with double (row and column) partitioning
Description
This data set gives information about species of benthic macroinvertebrates 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 samples (columns).
col.blocks is a vector containing the repartition of samples for the 6 dates : july 1982, august 1982,
november 1982, february 1983, april 1983 and july 1983.
row.blocks is a vector containing the repartition of species in the 4 groups defining the species
order.
dat.fac is a date factor for samples (6 dates).
sta.fac is a site factor for samples (6 sites).
esp.fac is a species order factor (Ephemeroptera, Plecoptera, Coleoptera, Trichoptera).
Details
The columns of the data frame ardeche$tab define the samples by a number between 1 and 6
(the date) and a letter between A and F (the site).
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