[R-sig-ME] extracting variance components in lme4?

Fabian Scheipl f.abian at gmx.net
Tue Feb 6 14:08:32 CET 2007


vc      <-VarCorr( model1 )
varcomps<-c(unlist( lapply(vc, diag) ), # random intercept variances
            attr(vc,"sc")^2)            # residual variance

also works if you have multiple random terms (intercept and slope, e.g.) for a given grouping factor.
Extracts the respective variances without the covariances.

Fabian Scheipl
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