I would guess that you first need to convert your textual dates to a date-time object via as.date, but as you failed to provide a reproducible example (e.g. via dput) I may be wrong. Maybe others may have greater insight.
Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Mon, Sep 9, 2019 at 8:55 AM Ogbos Okike <giftedlife2...@gmail.com> wrote: > Dear Contributors, > I have a data frame of the form: > 1997-11-23 -2.91709629064653 > 1997-12-07 -0.960255426066815 > 1997-12-11 -1.98210752999868 > 1997-12-20 -1.10800598439855 > 1998-01-01 -1.00090115428118 > 1998-01-29 -1.03056081882709 > 1998-03-27 -0.873243859498216 > 1998-04-09 -2.06378384750109 > 1998-04-12 -2.06826431469008 > 1998-04-19 -2.49834620746286 > 1998-05-02 -6.4357083781542 > 1998-05-17 -2.25359807972754 > 1998-05-21 -2.55799006865995 > 1999-08-22 -2.25114162617707 > 1999-08-25 -1.47905397376409 > 1999-09-05 -0.641589808755325 > 1999-09-09 -0.648954682695949 > 1999-09-13 -0.726364489272492 > 1999-09-16 -1.28445236942011 > > The events happen randomly and so the date is non-sequential. It run form > 1953 to 2019. > > I would like to select all the events/dates between 1998 to 2005. > > One of the things I tried is: > Year <- subset(MOSCFD50, date > "1998-01-01" & date < "2005-12-31"). > > But it didn't work. > > I would be thankful if you could please redirect me. > > Thank you very much. > Best regards > Ogbos > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.