[R] Daylight Saving Time

[Vasantha Kumar Kesavan]

In LINUX, I don't want R to use the operating system zoneinfo(Olsen
database) instead of that I like to point different path which has the
latest zoneinfo(latest Olsen database).

On Fri, Nov 7, 2014 at 2:34 AM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:

> Working now... after what action?
>
> AFAIK on *NIX systems R uses the OS installation of the Olsen database, so
> on a fresh login R should pick up any OS update you have installed.
> ---------------------------------------------------------------------------
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> Sent from my phone. Please excuse my brevity.
>
> On November 6, 2014 3:36:38 PM EST, Vasantha Kumar Kesavan <
> info.vasukv at gmail.com> wrote:
> >Thanks Jeff Newmiller, it is working now.
> >
> >I would like to know, the same kind of configuration can be done in
> >Linux
> >and Solaris platform.
> >
> >Instead of R is mapping to operating system(/usr/share/.
> >/usr/share/lib/)
> >zoneinfo directory.
> >
> >Thanks
> >Vasanth
> >
> >On Fri, Nov 7, 2014 at 1:18 AM, Jeff Newmiller
> ><jdnewmil at dcn.davis.ca.us>
> >wrote:
> >
> >> R on Windows uses the Olsen timezone database, a copy of which is
> >stored
> >> with R in the Program Files directory (e.g.
> >R/R-3.1.1/share/zoneinfo). You
> >> could update the file yourself if you can find a corrected version,
> >or
> >> download an updated version of R.
> >>
>
> >---------------------------------------------------------------------------
> >> Jeff Newmiller                        The     .....       .....  Go
> >Live...
> >> DCN:<jdnewmil at dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
> >> Go...
> >>                                       Live:   OO#.. Dead: OO#..
> >Playing
> >> Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
> >> /Software/Embedded Controllers)               .OO#.       .OO#.
> >rocks...1k
> >>
>
> >---------------------------------------------------------------------------
> >> Sent from my phone. Please excuse my brevity.
> >>
> >> On November 6, 2014 1:16:06 PM EST, Vasantha Kumar Kesavan <
> >> info.vasukv at gmail.com> wrote:
> >> >Hi,
> >> >
> >> >I am working R on windows 2012 R2 platform, I have updated the
> >latest
> >> >hotfixes for time zone information(Microsoft KB 2981580.
> >> ><http://support.microsoft.com/kb/2981580>).
> >> >
> >> >But still R is not populating correct date time values(Standard and
> >> >Daylight saving).
> >> >
> >> >Could you please advise me, how to enable R to pick up the latest
> >time
> >> >zone
> >> >information/configurations.
> >> >
> >> >Example:
> >> >
> >> >R --vanilla
> >> >Sys.setenv(TZ = "America/Eirunepe");
> >> >dt<-c(seq(as.POSIXct("2013-11-09 20:00:00",tz="America/Eirunepe"),
> >> >as.POSIXct("2013-11-10 10:00:00" ,tz="America/Eirunepe"),
> >by="hour"));
> >> >> dt
> >> > [1] "2013-11-09 20:00:00 AMT" "2013-11-09 21:00:00 AMT"
> >> > [3] "2013-11-09 22:00:00 AMT" "2013-11-09 23:00:00 AMT"
> >> > [5] "2013-11-10 00:00:00 AMT" "2013-11-10 01:00:00 AMT"
> >> > [7] "2013-11-10 02:00:00 AMT" "2013-11-10 03:00:00 AMT"
> >> > [9] "2013-11-10 04:00:00 AMT" "2013-11-10 05:00:00 AMT"
> >> >[11] "2013-11-10 06:00:00 AMT" "2013-11-10 07:00:00 AMT"
> >> >[13] "2013-11-10 08:00:00 AMT" "2013-11-10 09:00:00 AMT"
> >> >[15] "2013-11-10 10:00:00 AMT"
> >> >
> >> >For the “*America/Eirunepe*” time zone, the DST ended on Sun
> >> >10-Nov-2013 at
> >> >12:00:00 A.M. when local clocks were set backward 1 hour.
> >> >
> >> >
> >> >as per the latest timezone configuration, the date time sequence
> >should
> >> >have "2013-11-09 23:00:00" twice.
> >> >
> >> >
> >> >Thanks
> >> >
> >> >Vasanth
> >> >
> >> >       [[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.
> >>
> >>
>
>

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