VarCorr.merModList {merTools}

Extract the variances and correlations for random effects from a merMod list

Description

Extract the variances and correlations for random effects from a merMod list

Usage

## S3 method for class 'merModList'
VarCorr(x, sigma = 1, rdig = 3L, ...)

Arguments

x

for VarCorr: a fitted model object, usually an object inheriting from class merMod. For as.data.frame, a VarCorr.merMod object returned from VarCorr.

sigma

an optional numeric value used as a multiplier for the standard deviations.

rdig

the number of digits to round to, integer

...

Ignored for the as.data.frame method; passed to other print() methods for the print() method.

Value

a list with two elements "stddev" and "correlation" for the standard deviations and correlations averaged across models in the list

Examples

sim_list <- replicate(n = 10,
        expr = sleepstudy[sample(row.names(sleepstudy), 180),],
        simplify=FALSE)
fml <- "Reaction ~ Days + (Days | Subject)"
mod <- lmerModList(fml, data = sim_list)
VarCorr(mod)