I have next table source destine 3 3 7 7 6 6 3 4 4 4 4 3 3 3 3 3 3 3 3 3 3 4 4 4 4 3 3 4 4 3
I'm trying to create an array with the number of occurrences between the source and destination. id_ap<-levels(factor(df$v_source)) num_AP<-length(levels(factor(df$v_source))) mat<-matrix(data=NA,nrow=num_AP,ncol=num_AP, byrow=TRUE,dimnames=list(id_ap,id_ap)) 1 2 3 4 5 6 7 1 NA NA NA NA NA NA NA 2 NA NA NA NA NA NA NA 3 NA NA NA 4 NA NA NA 4 NA NA NA NA NA NA NA 5 NA NA NA NA NA NA NA 6 NA NA NA NA NA NA NA 7 NA NA NA NA NA NA NA what better way to count the occurrences of the table, for example 3-4 = 4 times Thanks -- View this message in context: http://r.789695.n4.nabble.com/Matrix-Counts-tp4468867p4468867.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
