Hi, random=~1|B/C C is nested in B
##Example data=Oats regress=lme(yield~nitro*Variety,data=Oats,random=~1|Block/Variety) ##i.e. variety is nested in block summary(regress) ##End of example Best, Daniel ------------------------- cuncta stricte discussurus ------------------------- -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Manli Yan Gesendet: Sunday, June 22, 2008 9:30 PM An: r-help@r-project.org Betreff: [R] problem in R for Linear mixed model~ Dear R users: I just got confused some R code used in linear mixed model~ example,two factors,A, B,C,A is fixed ,B,C are random,and B is nested in C,if I wannt to use linear mixed model,are the following code correct for each case? case1:want to know random effect of B, case1<-lme(y~A*B*C,random=~B|C) where "B|C" stand for what?,mean B is nested in C? case2: how to wirte random effect of C? case2<-lme(y~A*B*C,random=~C)? this doesnt work out,it seem it must have somehing like #|$ case3.omitting the random effect for B from case1 case3<-update(case1,random=~1|C),so I just type 1,so the random effect of B will be removed from the model,there only left random effect of c ,the random effect I removed ,which include both random intercept and slope ,correct?? case4:omitting the random intercept case4<-update(case1,random=B-1|C) this code I got from some paper,it said by inputing B-1|C,then the random intercept is removed,so,if I want to remove random slode,I input B-2|C,it doesnt work out. case5 :how to know the both random effect of B,and C,I dont know how to wirtie this in R . And I am a little confused of these R code,especially the #|# part,what deos this syntax really mean in LME package, Thank you for your time~ [[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. ______________________________________________ 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.
