[R] Daylight Saving Time

[Jeff Newmiller]

?timezones

You probably need to recompile R.
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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
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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.
>> >>
>> >>
>>
>>