Folks
In trying to use lmer for a hierarchical model, I encountered the
following message:
Error in UseMethod("VarCorr") :
no applicable method for 'VarCorr' applied to an object of class "mer"
foo.mer <- lmer(y ~ TP + (TP|M),data=joe.q)
> head(joe.q[,1:5])
TP M AB Trt y
1 1 Jan A NN 19.20002
2 1 Jan A NN 19.06378
3 1 Jan A NN 21.36292
4 1 Jan A NN 16.85191
5 1 Jan A N 17.89363
6 1 Jan A N 15.53853
I tried this through the display(foo.mer) from arm and by VarCorr(foo.mer)
My understanding is the VarCorr was essentially designed to work with
'mer' objects. Am I wrong about this? The lmer procedure seemed to work
fine
--
David K Stevens, P.E., Ph.D., Professor
Civil and Environmental Engineering
Utah Water Research Laboratory
8200 Old Main Hill
Logan, UT 84322-8200
435 797 3229 - voice
435 797 1363 - fax
[email protected]
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