search for: bporamost

Hi, I have a data frame with several factors and I want to count the occurrences of an event resulting from an interaction of some factors. I tried to do several tables (and then converting to d.f and then merge them by one factor and the freq Tab1 <- merge (BPorAmost,BPorSector,by=c('Sample','Freq')) Tab1 <- merge (Tab1,BPorDist,by=c('Sample','Freq')) Tab1 <- merge (Tab1,BPorProf,by=c('Sample','Freq')) But I have lots of NAs because I can have a interaction between sample and freq different for each factor:...