corAxis {cocorresp}

Correlation between ordination axes

Description

Calculates the Pearson product-moment correlation coefficient for the site scores of ordination axes.

Usage

corAxis(x, ...)

## Default S3 method:
corAxis(x, ...)

## S3 method for class 'symcoca'
corAxis(x, axes = NULL, ...)

Arguments

x

an ordination object. Only methods for objects of class symcoca are currently available.

axes

numeric; the number of axes to calculate the correlation coefficients for. If NULL, coefficients for all axes are returned.

...

arguments to be passed on to other methods.

Value

A named vector containing the correlation coefficients for the requested axes.

Note

The arguments for cor are hard coded at their defaults, see cor for details. A more flexible version is planned that will allow arguments to be passed to cor.

Author(s)

Gavin L. Simpson

See Also

cor, for the main analysis function.

Examples

## load some data
data(beetles)
data(plants)

## log transform the beetle data
beetles <- log(beetles + 1)

## symmetric Co-CA model
beetles.sym <- coca(beetles ~ ., data = plants, method = "symmetric")

## correlations between axes
corAxis(beetles.sym)