R help - May 2011 - extract value from mer object ?

What is the easiest way to extract a value from a 'mer' object from
glmer?  The first I need is the
trtpair Std.Dev.   which in this case is 0.17542?

I've managed to get the fixed effects numbers from 
summary(fednmaout)@coeffs

but no luck with the Random effects stuff.

TIA

Jim

> fednmaout
Linear mixed model fit by REML 
Formula: lor ~ as.factor(t2) + as.factor(t3) + (1 | trtpair) 
   AIC   BIC logLik deviance REMLdev
 97.17 107.6 -43.58    83.12   87.17
Random effects:
 Groups   Name        Variance Std.Dev.
 trtpair  (Intercept) 0.030771 0.17542 
 Residual             0.230785 0.48040 
Number of obs: 60, groups: trtpair, 3

Fixed effects:
               Estimate Std. Error t value
(Intercept)      0.3752     0.3563   1.053
as.factor(t2)1  -0.1677     0.2909  -0.576
as.factor(t3)1   0.1796     0.2909   0.617

Correlation of Fixed Effects:
            (Intr) a.(2)1
as.fctr(2)1 -0.816       
as.fctr(3)1 -0.816  0.500

==============================Dr. Jim Maas
University of East Anglia

Maas James Dr (MED <J.Maas <at> uea.ac.uk> writes:
> 
> 
> What is the easiest way to extract a value from a 'mer'
>  object from glmer?  The first I need is the 
> trtpair Std.Dev.   which in this case is 0.17542?
> 
> I've managed to get the fixed effects numbers from 
> summary(fednmaout)@coeffs
  You should use fixef(fednmaout) instead here.
> 
> but no luck with the Random effects stuff.
> 
  Something like

v <- VarCorr(fednmaout)
attr(v$trtpair,"stddev")

  Questions like this are probably more usefully asked on
the r-sig-mixed-models list ...
> TIA
> 
> Jim
> 
> > fednmaout
 [snip]