This typically occurs because of sloppy manual data entry outside of R. To relieve further analysis pain, you can manually clean the data (usually only effective for one-time analyses) or use R to fix problems right after loading the data (there are multiple methods for doing this... I prefer using ?sub on character data before creating the factor). <endquote>
str_trim in package stringr is great for this. John -- View this message in context: http://r.789695.n4.nabble.com/R-does-not-subset-tp4666129p4666453.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.
