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2007 Jan 18
1
How to specify arguments in lme() ?
...t. I tried to do:- fit2<-lme(Score~A*B+A*C+B*C,data=test,random=~A, na.action=na.pass) but the system give a message as follows:- Error in getGroups.data.frame(dataMix, groups) : Invalid formula for groups So how should I specify the arguments? Thank you very much for your help! Jiajie