<joris.dewolf <at> cropdesign.com> writes: > Have a look at Rnew volume 5/1 (http://cran.r-project.org/doc/Rnews/) where > Doug Bates explains this nicely. Consider using lme4 for your purpose.
But be aware of <http://finzi.psych.upenn.edu/R/Rhelp02a/archive/76742.html> if you currently want to use lme4. Dieter ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.