Just as a note, if you are going to convert a factor to numeric, the preferred idiom is:
## hypothetical numeric factor x <- factor(paste(10:15)) ## preferred method for conversion as.numeric(levels(x))[x] Cheers, Josh ______________________________________________ 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.
