Hi, I have date and time in a format like this: " 2007-02-21 05:19:00". Do you which function i can use to derterminate the difference in time between this value and an other one. For exemple: this one : 2007-02-21 05:19:00 and this one : 2007-02-20 14:21:53 Thanks a lot, Karine H. _________________________________________________________________ [[elided Hotmail spam]] [[alternative HTML version deleted]]
dd = as.POSIXlt(c("2007-02-21 05:19:00", "2007-02-20
14:21:53"),
format="%Y-%m-%d %H:%M:%S")
dd[1]-dd[2]
b
On Tue, Feb 23, 2010 at 2:48 PM, karine heerah <karine.heerah at
hotmail.fr> wrote:>
> Hi,
>
>
>
> I have date and time in a format like this: " 2007-02-21
05:19:00".
>
> Do you which function i can use to derterminate the difference in time
between this value and an other one.
>
> For exemple:
>
>
>
> this one : 2007-02-21 05:19:00
>
> and this one : 2007-02-20 14:21:53
>
>
>
> Thanks a lot,
>
> Karine H.
>
>
>
>
>
>
> _________________________________________________________________
> [[elided Hotmail spam]]
>
> ? ? ? ?[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.
>
Hi Karine,
time1 <- as.POSIXct("2007-02-21 05:19:00")
time2 <- as.POSIXct("2007-02-20 14:21:53")
difftime(time1, time2)
should get you started.
-Ista
On Tue, Feb 23, 2010 at 9:48 AM, karine heerah <karine.heerah at
hotmail.fr> wrote:>
> Hi,
>
>
>
> I have date and time in a format like this: " 2007-02-21
05:19:00".
>
> Do you which function i can use to derterminate the difference in time
between this value and an other one.
>
> For exemple:
>
>
>
> this one : 2007-02-21 05:19:00
>
> and this one : 2007-02-20 14:21:53
>
>
>
> Thanks a lot,
>
> Karine H.
>
>
>
>
>
>
> _________________________________________________________________
> [[elided Hotmail spam]]
>
> ? ? ? ?[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.
>
--
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org
See R News 4.1 and particularly the table at the end of the relevant article. On Tue, Feb 23, 2010 at 9:48 AM, karine heerah <karine.heerah at hotmail.fr> wrote:> > Hi, > > > > I have date and time in a format like this: " 2007-02-21 05:19:00". > > Do you which function i can use to derterminate the difference in time between this value and an other one. > > For exemple: > > > > this one : 2007-02-21 05:19:00 > > and this one : 2007-02-20 14:21:53 > > > > Thanks a lot, > > Karine H. > > > > > > > _________________________________________________________________ > [[elided Hotmail spam]] > > ? ? ? ?[[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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. >