Hi, The question is not clear so not sure this is what you wanted. dat1<- read.table(text=" SameName Individual Age Gender 1 4 80 M 2 15 56 F 3 1 75 F 4 15 56 F 5 2 58 F 6 4 80 M ",sep="",header=TRUE,stringsAsFactors=FALSE) reps<-c(4,15)
dat1$Newcol<-as.numeric(dat1$Individual%in% reps) dat1 # SameName Individual Age Gender Newcol #1 1 4 80 M 1 #2 2 15 56 F 1 #3 3 1 75 F 0 #4 4 15 56 F 1 #5 5 2 58 F 0 #6 6 4 80 M 1 A.K. ----- Original Message ----- From: Kripa R <kripa...@hotmail.com> To: "r-help@r-project.org" <r-help@r-project.org> Cc: Sent: Monday, August 12, 2013 6:59 PM Subject: [R] pulling out pairs from data frame Hello everyone, I'm having trouble pulling out paired samples from a data set... I have the following: reps<-c(4,15) #the variable reps is a list of all paired samples >data SameName Individual Age Gender 1 4 80 M 2 15 56 F 3 1 75 F 4 15 56 F 5 2 58 F 6 4 80 M I'd like to make a new variable with only the samples that have pairs. Any suggestions would be greatly appreciated Thanks! .kripa [[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. ______________________________________________ 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.