I've got problems with plotting in nlme :
Error in do.call(plotFun, as.list(args)) :
couldn't find function "xyplot"
I've seen in Changelog that there have been changes in plotting
funtions, may I've missed something...
nlme3.1-10
All the plotting functions in the nlme library rely on trellis
graphics, which is not currently available in R.
Work is proceeding on a trellis package for R (the name may end up
being lattice, not trellis) and several of the plot functions in nlme
can be run with the development versions of the package. Paul Murrell
will be speaking about trellis/lattice at the DSC-V2001 meeting.
Perhaps he will be able to give more information about providing a
development snapshot in the src/contrib/Devel section of CRAN. Paul
has been working on the underlying graphical capabilities and Deepayan
Sarkar has been working on the R-level trellis functions.