hello gavin, you are right, i didn't get into the documentation to deep and i'm also a beginner, that's why i'm just about to get into the logical part of the syntax. now, the output from perm.disp() says:
#No. of permutations: 999 #Permutation type: free #Permutations are unstratified #Mirrored permutations?: No #Use same permutation within strata?: No from this i concluded that you can restrict the permutation scheme.. with permcontrol() i did the following #with the simulated blocks from >blocks<-factor(c(rep(1,4),rep(2,4),rep(3,4),rep(4,4),rep(5,4),rep(6,4))) #i did this, which should permute strata as a whole, as i understood the documentation >permutest(mod, permControl(strata = blocks, type = "free", permute.strata = TRUE), pairwise=TRUE) and the output said.. Permutations: 199 Permutation type: free Permutations stratified between 'blocks' Mirrored permutations?: No Use same permutation within strata?: No so, i stratified the permutation, but i have the feeling that#s not what it should be - to my understanding it is necessary to permute the group-alignment of each block concordantly and i don't know if that's what happend.. the last line of the presented output shoul be yes, i guess. the documentation quotes that the argument for this is permute.strata=TRUE, which i did... thanks a lot for your help, kay -- View this message in context: http://n4.nabble.com/restricted-permutations-in-permtest-tp1017422p1017572.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
