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tp25491971p25491971
2009 Sep 17
1
Dealing with heterogeneity with varComb weights
Hi,
I am trying to add multiple variance structures such as the first example
below:
vf1 <- varComb(varIdent(form = ~1|Sex), varPower())
However my code below will not work can anybody please advise me?
VFcomb<-varComb(varExp(form=~depcptwithextybf),varFixed(form=~FebNAO))
also if you have two variables with the same weights function would you
write that as: