hi,
I have the following data: x1 y1 y2 y3 1.3 grp1 a1 NA 2.4 grp1 a1 NA 3.7 grp1 a2 NA 1.9 grp1 a2 NA 2.2 grp2 NA b1 3.5 grp2 NA b1 7.7 grp2 NA b2 6.0 grp2 NA b2 how can I analyse this with the anova-function? I get the error message "error in `contrasts<-`(`*tmp*`, value = "contr.treatment") : contrasts can be applied only to factors with 2 or more levels" ______________________________________________ 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.
