Hello,I am trying to use lmLists in the lme4 package and copying over very standard code from the nlme package given in 'Mixed-Effects Models in S and S-Plus'. It appears to not accept an 'I(age-11)' in the formula, though it will accept the formula with out the subtraction of 11 from age. This seems like it would be a bug, since this is standard formula syntax, unless I'm missing something about lmList in lme4. Please see my session info and output below.
Thanks for your help, Elizabeth
> library(lme4) > data(Orthodont) > sessionInfo() R version 2.10.0 (2009-10-26) x86_64-apple-darwin9.8.0 locale: [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base packages:[1] stats graphics grDevices utils datasets methods base
other attached packages:[1] MEMSS_0.3-6 lme4_0.999375-32 Matrix_0.999375-31 lattice_0.17-26
loaded via a namespace (and not attached):
[1] grid_2.10.0 tools_2.10.0
> fm1Orth.lis<-lmList(distance~age|Subject, data=Orthodont)
> fm2Orth.lis<-lmList(distance~I(age-11)|Subject, data=Orthodont)
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
Error in unique(c("AsIs", oldClass(x))) : object 'age' not found
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