Question, How do you know that the following two rows should have NAs ? 1 16/02/87 NA NA 1 17/02/87 NA NA
----------------Contact Details:------------------------------------------------------- Contact me: tal.gal...@gmail.com | 972-52-7275845 Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-statistics.com (English) ---------------------------------------------------------------------------------------------- On Tue, Mar 1, 2011 at 11:06 AM, Grant Gillis <grant.j.gil...@gmail.com>wrote: > 1 16/02/87 NA NA > 1 17/02/87 NA NA > [[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.