VarCorr {lme4} | R Documentation

## Extract variance and correlation components

### Description

This function calculates the estimated variances, standard deviations, and correlations between the random-effects terms in a linear mixed-effects model, of class `lme`, or a generalized linear mixed-effects model, of class `glmm`. When appropriate, the within-group error variance and standard deviation are also calculated.

### Value

an object of class `VarCorr`.

### Author(s)

Saikat DebRoy saikat@stat.wisc.edu and Douglas Bates bates@stat.wisc.edu

### See Also

`lme`, `GLMM`, `VarCorr-class`

### Examples

    data(bdf)
    fm <- lme(langPOST ~ IQ.ver.cen + avg.IQ.ver.cen, data = bdf,
              random = ~ IQ.ver.cen | schoolNR)
    VarCorr(fm)

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