probelm solved: data <- read.table("pdvspt.txt", header = T, dec = ",")
It was the coma, now I have everything in numeric. Thanks a lot for the support! Ale -- View this message in context: http://r.789695.n4.nabble.com/as-integer-tp2245987p2246989.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.