Error can be a formula, and would normally be in split-plot designs. Examples in MASS4, chapter 10, for example.
Unless you have exact balance, use lme. On Tue, 28 Oct 2003, Bill Shipley wrote: > Hello. I am about to do a rather complicated analysis and am not sure > how to do it. The experiment has a split-plot design and also repeated > measures. Both of these complications require one to define an error > term and it seems that one cannot specify two such terms. The > split-plot command is: > > > > aov(y~covariates +A*B+Error(C), data=) where A and B are the fixed > effects and C is the plot-level source of error. > > > > The repeated measures command is: > > aov(y~covariates+A*B*time + Error(subject), data=) where subject is the > error source for the repeated measures over time. > > > > Can these be somehow combined to include a split-plot & > repeated-measures design? If not, can I perhaps use a mixed-model > analysis with random subjects nested within the whole-plot? > > > > Any suggestions or leads are appreciated. > > > > Bill Shipley > > Associate Editor, Ecology > > North American Editor, Annals of Botany > > D�partement de biologie, Universit� de Sherbrooke, > > Sherbrooke (Qu�bec) J1K 2R1 CANADA > > [EMAIL PROTECTED] > > <http://callisto.si.usherb.ca:8080/bshipley/> > http://callisto.si.usherb.ca:8080/bshipley/ > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
