[R] Fwd: model simplification in repeated anova

2007-01-17 Thread Michael Greeff
Hi, I tried to do a model simplification in a repeated anova with 3 factors (population,treatment,site). I tried to get rid of some interactions. Obviously it's not possible to use the function "anova" straight away to compare the different models. I got the suggestion to use the function

[R] Fwd: model simplification in repeated anova

2007-01-17 Thread Michael Greeff
Hi, I tried to do a model simplification in repeated anovas. obviously it's not possible to use the function "anova" straight away. I got the suggestion to do it with proj (see below). In my data, however, I have in "block" not the third order interaction (n:p:k), but to factors and their

[R] model simplification in repeated anova

2007-01-15 Thread Michael Greeff
Hi, I've done a repeated ANOVA looking as follows: model<-aov(y~a*b*c+Error(d)) Now I want to get rid of some or all of the interactions. But neither AIC nor anova work. What is the appropriate function to test my model? __ R-help@stat.math.ethz.ch m