cheers for the quick reply. Sorry I am getting a bit confused I have never used the anything else any from of extension on read.csv what I did was:
1. enter the data into excel and save it as comma delimited 2. then used: s1 <- read.csv("book1.csv") If i try to run this s1 <- read.table(textConnection("treat absorb + 0 1.8052 + 0.5 2.07075 + 1.0 2.2345"), header = TRUE) it comes with up with the following: > source(.trPaths[7], echo=TRUE, max.deparse.length=150) Fehler in source(.trPaths[7], echo = TRUE, max.deparse.length = 150) : Objekt '.trPaths' nicht gefunden the way i have done is is the following > s1 <- read.csv("Book1.csv") > head(s1) treat.absorb 1 0;1.8052 2 0.5;2.07075 3 1;2.2345 > str(s1) 'data.frame': 3 obs. of 1 variable: $ treat.absorb: Factor w/ 3 levels "0.5;2.07075",..: 2 1 3 hope that gives u a better insight -- View this message in context: http://r.789695.n4.nabble.com/convert-factor-data-to-numeric-tp1012855p2996471.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.