ey man!! one option to read .dat file is the next: data <- read.delim("document.dat", sep=" ") i hope it is useful for you Rafael -- View this message in context: http://r.789695.n4.nabble.com/How-to-read-the-contents-dat-file-tp4089943p4090000.html Sent from the R help mailing list archive at Nabble.com.