R: Compute Variance Component Estimates

varcomp {ape} | R Documentation

## Compute Variance Component Estimates

### Description

Get variance component estimates from a fitted `lme` object.

### Usage

    varcomp(x, scale = FALSE, cum = FALSE)

### Arguments

`x` | A fitted `lme` object
`scale` | Scale all variance so that they sum to 1
`cum` | Send cumulative variance components.

### Details

Variance computations is done as in Venables and Ripley (2002).

### Value

A named vector of class `varcomp` with estimated variance components.

### Author(s)

Julien Dutheil dutheil@evolbio.mpg.de

### References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S (Fourth Edition). New York: Springer-Verlag.

### See Also

`lme`

### Examples

    data(carnivora)
    library(nlme)
    m <- lme(log10(SW) ~ 1, random = ~ 1|Order/SuperFamily/Family/Genus, data=carnivora)
    v <- varcomp(m, TRUE, TRUE)
    plot(v)

[Package ape version 5.6 Index]