VarCorr: Extract variance and correlation components
Description
Extract the estimated variances, standard
deviations, and correlations of the random-effects terms in a
linear mixed-effects model, of class lme, or a generalized
linear mixed-effects model. When appropriate,
the within-group error variance and standard deviation are also
calculated.
Usage
## S3 method for class 'mer':
VarCorr(x, REML = x@method == "REML", useScale = x@useScale, \dots)
Arguments
x
a fitted model object, usually an object inheriting from
class lmer.
REML
logical indicating if REML should be used.
useScale
logical indicating if a scale should be computed and
used; otherwise sc <- 1 is used.
...
Additional, optional arguments for some methods. At
present none are used.
Value
an object of class VarCorr.
See Also
the lmer function and lmer class;
the result class VarCorr.