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Help with aggregation
2008 Oct 02
1
Help with aggregation
...1 1 3 0 0 3 0 0 library(Hmisc) myAgg<-summarize(Mcookie$c_we_conversion, by=Mcookie$user_id, FUN=max, na.rm=TRUE) names(myAgg)<- c("user_id","c_we_converter") Mcookie <- merge(Mcookie, myAgg, by.x = "user_id", by.y = "user_id") Thanks in advance, Mike [[alternative HTML version deleted]]