Thanks David. That works perfectly! Although, I'm still not sure I understand entirely why the input file says the character value "null" and yet, it actually is NA...
On Fri, Sep 16, 2011 at 11:35 AM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Sep 16, 2011, at 11:08 AM, David Winsemius wrote: > > >> On Sep 16, 2011, at 10:36 AM, Ben Ganzfried wrote: >> >> Hi guys, >>> >>> snipped > > >>> Second, I changed the first line of my code to: >>> tmp <- >>> ifelse(uncurated$days_to_**tumor_recurrence==NA,"** >>> norecurrence","recurrence") >>> >> >> I do not know why your original did not succeed but this code should have >> been written: >> >> tmp <- >> ifelse(is,na(uncurated$days_**to_tumor_recurrence),"** >> norecurrence","recurrence") >> > ^.^ > > Except that should have been a period. > > -- > > David Winsemius, MD > West Hartford, CT > > [[alternative HTML version deleted]] ______________________________________________ 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.