[R] Choosing specific Date Range from non-sequential Date

[Jeff Newmiller]

Works for me. Apparently you are not showing us everything you are doing. As Bert recommended, you need to use the dput function rather than dumping numbers into the email if we are to know how your data are stored in memory which will affect what results you get. I highly recommend using the reprex package to verify that your example is reproducible.

On September 9, 2019 12:14:50 PM PDT, Ogbos Okike <giftedlife2014 using gmail.com> wrote:
>Dear Bert and Jeff,
>Thank you for looking at this.
>I am surprised my message was not in plain text. It has been
>configured to send message to the list in plain text earlier before.
>
>The data again please.
>
>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 first column is  date and the second is another data of interest.
>
>The date is long but note sequential. Runs randomly from 1953 to 2019.
>
>I would like to select any range of date from year A to year B.
>
>Thank you again for your help.
>Best
>Ogbos
>
>
>On Mon, Sep 9, 2019 at 6:18 PM Jeff Newmiller
><jdnewmil using dcn.davis.ca.us> wrote:
>>
>> 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 using 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 using 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 using 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 using 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.
>>
>> --
>> Sent from my phone. Please excuse my brevity.

-- 
Sent from my phone. Please excuse my brevity.