[R] Daylight Saving Time
Vasantha Kumar Kesavan
info.vasukv at gmail.com
Fri Nov 7 11:21:30 CET 2014
I am Sorry for not explained my requirement to you properly.
As you told in Windows I need to update the $R_HOME/share/zoneinfo with the
latest time zone information, since R is not using the operating system
time zone files. Then I have updated the zoneinfo directory, after that it
is working fine for me in the windows.
In the linux platform by default R is using the operating system timezone
files available at "/usr/share/zoneinfo" path. Yesterday my question was is
it there are any way to configure the R to use different path
("/tmp/zoneinfo") instead of "/usr/share/zoneinfo".
Then from the internet I came to know that the TZDIR
(TZDIR="/tmp/zoneinfo") environment variable can be used for configure
different time zone path instead of the default path. By setting the TZDIR
environment variable in Linux does the need as I am expected. So my
requirement in Windows and Linux platform are worked out.
Now I like to know, how to do the same in Solaris operating system (when I
am tried with setting TZDIR environment variable as like Linux but no luck).
Thanks
Vasanth
On Fri, Nov 7, 2014 at 2:55 AM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:
> ?timezones
>
> You probably need to recompile 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 4:10:58 PM EST, Vasantha Kumar Kesavan <
> info.vasukv at gmail.com> wrote:
> >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.
> >>
>
> >---------------------------------------------------------------------------
> >> 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 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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