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2008 Jun 17
0
some r code for linear mixed model
...ts,thanks a lot~ Say: we have A B C three factors (i)A is fixed ,B and C are random,and B is nested in C,so the R code for this case would be: case1<-lme(y~A+B+C+......,random=~B|C) where "B|C" actually mean B is nested in C, is it correct? (ii)and if I update the case as: updatedcase1<-update(case1,random=~1|C), did I just remove the random effect of B, and only random effect of C left in the model? is it correct? (iii)A ,B,is fixed ,but C is random,no nested case,how am I gonna write the R code,since lme(y~A+B+C+.....,random=~C) lead to error, (iv)for the case1,if I...