On May 18, 2012, at 2:26 PM, Giggles wrote: > I am a newbie and can't figure out how to recode a numeric value. In > my data (pharm311), I have a column called "explain" and I need to > find all the 6's and change it to NA (blank). Could someone help? > > I'm sorry if this is too basic, I started messing with R this week and > got stuck with this problem since yesterday... > > Thanks in advance!
The easiest and canonical way would be: is.na(pharma311$explain) <- pharma311$explain == 6 See ?is.na for more information. Just to be picky, an NA value is not the same as blank. That is NA != "". R has specific behavior in dealing with NA values. Regards, Marc Schwartz ______________________________________________ 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.
