[R-sig-ME] Is anyone using the lmList() function in the lme4 package?

lancelot renaud.lancelot at cirad.fr
Sat Jun 26 21:00:01 CEST 2010

I use it - more for exploratory analysis than to get starting estimates, 
to decide what might be a good starting point for the random structure 
of (g)lmm's. It is also very convenient to explain the concepts of mixed 
models, e.g. with MSc students with a biological background. Indeed, I 
would miss the lmList function if it was removed from future versions of 

All the best,


Douglas Bates a écrit :
> When we wrote the nlme package we tried to be very careful about
> starting estimates and created the lmList function to allow evaluation
> of coefficients from within-group linear fits.  It turns out that it
> is most useful for longitudinal data where there are enough
> observations on each subject to do within-subject fits; that is, for
> data like the sleepstudy data.  Subsequent developments have made it
> easy enough to fit the mixed model reliably without needing a lot of
> preliminary work to get starting estimates.  (Similarly, the
> groupedData class was a good idea at the time but no longer
> necessary.)
> Would anyone miss the lmList function if it was removed from future
> versions of lme4?
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Renaud Lancelot
EDEN Project, coordinator

UMR CIRAD-INRA "Contrôle des maladies animales exotiques et émergentes"
Joint research unit "Control of emerging and exotic animal diseases"

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