Ogbos Okike
2019-Sep-09 15:55 UTC
[R] Choosing specific Date Range from non-sequential Date
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]]
Bert Gunter
2019-Sep-09 16:55 UTC
[R] Choosing specific Date Range from non-sequential Date
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 <giftedlife2014 at 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 at r-project.org mailing list -- To UNSUBSCRIBE and more, see > stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >[[alternative HTML version deleted]]
Jeff Newmiller
2019-Sep-09 17:18 UTC
[R] Choosing specific Date Range from non-sequential Date
Or the column is not named "date", or it is a factor... and the question is not posted in plain text.... On September 9, 2019 9:55:48 AM PDT, Bert Gunter <bgunter.4567 at gmail.com> wrote:>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 <giftedlife2014 at 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 at r-project.org mailing list -- To UNSUBSCRIBE and more, see >> stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > [[alternative HTML version deleted]] > >______________________________________________ >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code.-- Sent from my phone. Please excuse my brevity.