On Tue, 30 Aug 2011, David Winsemius wrote:
It appears that your original file was delimited by "|" and your used something else, perhaps the default white-space setting?
David, Yes, the csv file separator is the pipe.
I think you need to go back and do your input operations again with sep="|" (Or you could provide str() on the data.frame rather than making us guess.)
str(chemdata)
'data.frame': 14886 obs. of 1 variable: $ site_id.sample_date.param.quant: Factor w/ 14886 levels "BC-0.5|1996-04-19|Arsenic|0.01",..: 11579 14219 13298 11982 11909 13371 13082 111 12 23 ... Thanks, Rich ______________________________________________ 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.