ade4: santacatalina – R documentation

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santacatalina

Indirect Ordination

Description

This data set gives the densities per hectare of 11 species of trees for 10 transects of topographic moisture values (mean of several stations per class).

Usage

data(santacatalina)

Format

a data frame with 11 rows and 10 columns

Source

Gauch, H. G. J., Chase, G. B. and Whittaker R. H. (1974) Ordination of vegetation samples by Gaussian species distributions. Ecology, 55, 1382–1390.

Examples

data(santacatalina)
coa1 <- dudi.coa(log(santacatalina + 1), scan = FALSE) # 2 factors

if(adegraphicsLoaded()) {
  g1 <- table.value(log(santacatalina + 1), plot = FALSE)
  g2 <- table.value(log(santacatalina + 1)[, sample(10)], plot = FALSE)
  g3 <- table.value(log(santacatalina + 1)[order(coa1$li[, 1]), order(coa1$co[, 1])], plot = FALSE)
  g4 <- scatter(coa1, posi = "bottomright", plot = FALSE)
  G <- ADEgS(list(g1, g2, g3, g4), layout = c(2, 2))
} else {
  par(mfrow = c(2, 2))
  table.value(log(santacatalina + 1))
  table.value(log(santacatalina + 1)[, sample(10)])
  table.value(log(santacatalina + 1)[order(coa1$li[, 1]), order(coa1$co[, 1])]) 
  scatter(coa1, posi = "bottomright")
  par(mfrow = c(1, 1))
}

ade4

Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences

v1.7-16

GPL (>= 2)

Authors

Stéphane Dray <stephane.dray@univ-lyon1.fr>, Anne-Béatrice Dufour <anne-beatrice.dufour@univ-lyon1.fr>, and Jean Thioulouse <jean.thioulouse@univ-lyon1.fr>, with contributions from Thibaut Jombart, Sandrine Pavoine, Jean R. Lobry, Sébastien Ollier, Daniel Borcard, Pierre Legendre, Stéphanie Bougeard and Aurélie Siberchicot. Based on earlier work by Daniel Chessel.

Initial release