santacatalina: Indirect Ordination

Description Usage Format Source Examples

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

1

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

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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 documentation built on June 17, 2021, 5:14 p.m.

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