search for: pairidduplicates

...set for which the value of "Pairiddups" is TRUE. How do I do it? And how do I get past the error? Thank you so much, Diana PairID<-c(Health2$pairid) duplicated(PairID, incomparables=TRUE, fromLast=TRUE) PairIDdup=duplicated(PairID) cbind(PairID, PairIDdup) PairID[which(PairIDdup)] PairIDDuplicates<-PairID%in%PairID[which(PairIDdup)] PairIDs<-cbind(PairID, PairIDDuplicates) colnames(PairIDs)<-c("Pairid","Pairiddups") Health2PairsOnly<-PairIDs[ which(PairIDs$Pairiddups=='TRUE'), ] -- View this message in context: http://r.789695.n4.nabble.com/Keep-r...