I have design with two repeated-measures factor, and no grouping factor. I can analyze the dataset successfully in other software, including my legacy DOS version BMDP, and R's 'aov' function. I would like to use 'Anova' in 'car' in order to obtain the sphericity tests and the H-F corrected p-values. I do not believe the data are truly deficient in rank. I followed the methods for this kind of analysis outlined in Bennett's excellent handouts for his Psychology 710 course http://www.psychology.mcmaster.ca/bennett/psy710/lectures/maxwell_chp12.pdf I am trying to convert my own similar course to R for my students for next fall. I have been successful at analyzing a segment of the data as a 2-way repeated measures design.
Here is my code: > your.data=read.table(pipe("pbpaste"),header=T) > your.data partic A1B1 A1B2 A1B3 A1B4 A2B1 A2B2 A2B3 A2B4 A3B1 A3B2 A3B3 A3B4 1 p1 1 1 2 3 1 2 4 7 1 3 7 10 2 p2 2 2 3 3 2 2 5 6 2 4 6 9 3 p3 1 2 2 3 2 3 2 6 1 4 7 9 4 p4 1 1 2 2 1 2 3 6 2 3 8 10 5 p5 2 2 3 3 2 3 5 7 2 3 7 9 > attach(your.data) > multmodel=lm(cbind(A1B1, A1B2, A1B3, A1B4, A2B1, A2B2, A2B3, A2B4, A3B1, A3B2, A3B3, A3B4)~1) > poke.idata=read.table(pipe("pbpaste"),header=T) > poke.idata Afac Bfac 1 A1 B1 2 A1 B2 3 A1 B3 4 A1 B4 5 A2 B1 6 A2 B2 7 A2 B3 8 A2 B4 9 A3 B1 10 A3 B2 11 A3 B3 12 A3 B4 > attach(poke.idata) > pokeAnova =Anova(multmodel,idata=poke.idata,idesign=~Afac*Bfac,type="III") Error in linear.hypothesis.mlm(mod, hyp.matrix, SSPE = SSPE, idata = idata, : The error SSP matrix is apparently of deficient rank = 4 < 6 Thanks for any help or advice. And thanks for the 'car' package, which is a great asset to my course. I'm just stuck on this one example. colleen moore http://www.childrenandpollution.org/ChildrenPollution/ChildrenAndPollution/more_info.html Colleen F. Moore, Professor Psychology Department 1202 W. Johnson St. University of Wisconsin Madison, WI 53706 cfmo...@wisc.edu ----- [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org 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.