santacatalina {ade4} | R Documentation

## 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)

### 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)
    par(mfrow = c(2,2))
    table.value(log(santacatalina + 1), grid = TRUE)
    table.value(log(santacatalina + 1)[,sample(10)], grid = TRUE)
    coa1 <- dudi.coa(log(santacatalina + 1), scan = FALSE) # 2 factors
    table.value(log(santacatalina + 1)[order(coa1$li[,1]),
        order(coa1$co[,1])], grid = TRUE)
    scatter(coa1, posi = "bottom")

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