See ?subset, especially the example there. (I'm surprised this function isn't in R-intro...)
Andy > From: Tobias Muhlhofer > > Hi! > > Sorry for asking a trivial questions, but I can't seem to > figure this out. > > I have a dataframe called master containing 30-odd variables. > > In this dataframe, I have observations across these 30 variables from > 1930 to 2003 (I've made a "year" variable). How can I drop > all rows for > which the year is less than 1960? I'm assuming something with > ifelse() > but I can't quite figure it out. > > I would appreciate a suggestion of some syntax. > > Thanks! > Toby > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
