[R-sig-ME] extracting variance components in lme4?
bates at stat.wisc.edu
Tue Feb 6 14:42:33 CET 2007
On 2/6/07, Fabian Scheipl <f.abian at gmx.net> wrote:
> 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.
Yes, indeed. That is better than the version that I suggested. Thanks.
If a good name for such an extractor can be suggested I will
incorporate it in the lme4 package. Any suggestions for a name?
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