On Tue, Jun 3, 2014 at 8:44 PM, David Winsemius <dwinsem...@comcast.net> wrote: > > On Jun 3, 2014, at 11:03 AM, Adrian Dușa wrote: > >> Dear All, >> >> I should be knowing this, but not get it right... > > I'm a little surprised to see you ask this, too, but we each have lacunae in > our R knowledge, so I hope this helps:
Thanks very much David, yes indeed sometimes even the most basic things can slip out... but I am grateful for this r-help list. Apologies for the late reply, I am attending a conference all the way in Toronto and the difference in time plus the activity here makes it a bit more difficult to catch up. Best wishes, Adrian -- Adrian Dusa University of Bucharest Romanian Social Data Archive 1, Schitu Magureanu Bd. 050025 Bucharest sector 5 Romania Tel.:+40 21 3126618 \ +40 21 3120210 / int.101 Fax: +40 21 3158391 ______________________________________________ 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.