Hi, You don't even need to split. This could be done dat1<-read.table(text=" year h len fre 1994 5 10.5 2 1994 5 14.0 2 1994 5 11.5 1 1994 9 13.0 3 1994 9 11.5 1 1994 9 13.5 5 ",sep="",header=TRUE)
dat1[rep(row.names(dat1),dat1$fre),1:3] # year h len #1 1994 5 10.5 #1.1 1994 5 10.5 #2 1994 5 14.0 #2.1 1994 5 14.0 #3 1994 5 11.5 #4 1994 9 13.0 #4.1 1994 9 13.0 #4.2 1994 9 13.0 #5 1994 9 11.5 #6 1994 9 13.5 #6.1 1994 9 13.5 #6.2 1994 9 13.5 #6.3 1994 9 13.5 #6.4 1994 9 13.5 A.K. ----- Original Message ----- From: "mmur...@tiscali.it" <mmur...@tiscali.it> To: smartpink...@yahoo.com Cc: Sent: Saturday, January 12, 2013 1:23 PM Subject: bind tables Hi Arun, Thank you very much for your reply. I know that I was not clear enough, since my basic knowledge of r language. To be more clear.... I have this df: year h len fre 1994 5 10.5 2 1994 5 14.0 2 1994 5 11.5 1 1994 9 13.0 3 1994 9 11.5 1 1994 9 13.5 5 MY goal is to obtain: year h len 1994 5 10.5 1994 5 10.5 1994 5 14.0 1994 5 14.0 1994 5 11.5 1994 9 13.0 1994 9 13.0 1994 9 13.0 1994 9 11.5 1994 9 13.5 1994 9 13.5 1994 9 13.5 i.e. disaggregate the freq variable. To do that I'm trying to rbind as follow: each row with fre=2 twice (aa,aa) having subset aa for fre=2 each row with fre=3 three times (aa,aa,aa) having subset aa for fre=3 each row with fre=3 three times (aa,aa,aa,aa,aa) having subset aa for fre=5 You probably know a faster and less rude way :) best Matteo ______________________________________________ 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.