[R] Re: [R-SIG-Mac] lme4 print and summary errror
Douglas Bates
bates at wisc.edu
Tue Jan 11 12:37:04 CET 2005
Andrew Beckerman wrote:
> Hi all - (this is posted to r-help and R-SIG-MAC)
>
> OSX 10.3.7, R 2.0.1, lme4/Matrix/latticeExtra latest, fresh install of
> R. MASS loaded (or not).
>
> I am getting an error message for the print() and summary() commands
> with all lme models I try and run in lme4 (GLMM's work fine). Using the
> example from the lme help, summary and print produce the following
> errors, despite the model being fit, as indicated by VarCorr() and
> examination of str(fm). Any ideas?
>
> (I can't reproduce this on a windows95 install of 2.0.1, so I am
> guessing it may be a mac thing at the moment? This happens with the
> binary or the source installation of lme4.)
>
> Cheers
> andrew
>
> > data(bdf)
> > fm <- lme(langPOST ~ IQ.ver.cen + avg.IQ.ver.cen, data = bdf,
> + random = ~ IQ.ver.cen | schoolNR)
> > summary(fm)
> Error in verbose || attr(x, "verbose") : invalid `y' type in `x || y'
> > fm
> Linear mixed-effects model fit by Data: NULL
> Log-likelihood: NULL
> Fixed: list()
> NULL
>
> Length Class Mode
> 0 NULL NULL
> Number of Observations:
> Number of Groups: Error in 1:dd$Q : NA/NaN argument
> > VarCorr(fm)
> Groups Name Variance Std.Dev. Corr
> schoolNR (Intercept) 8.07702 2.84201
> IQ.ver.cen 0.20806 0.45614 -0.642
> Residual 41.34942 6.43035
>
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Check what packages you have loaded. It looks as if you have loaded
lme4 and nlme at the same time and you their methods will conflict.
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