On 06.12.2012 15:54, Jeff Newmiller wrote:
What OS are you using? It makes a difference.
... and R version. Uwe Ligges
--------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@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. Andrew Digby <andrewdi...@mac.com> wrote:Can anyone please shed any light on why R DateTimeClasses give weird times for when daylight saving time information changes, and which aren't consistent with the OS? Example: Expected result: in New Zealand DST stopped (NZDT -> NZST) at 03:00 NZDT on 2010-04-04, as confirmed by the OS time zone info (OS X 10.8.2): zdump -v /etc/localtime /etc/localtime Sat Apr 3 13:59:59 2010 UTC = Sun Apr 4 02:59:59 2010 NZDT isdst=1 /etc/localtime Sat Apr 3 14:00:00 2010 UTC = Sun Apr 4 02:00:00 2010 NZST isdst=0 Result in R: R has DST changing at 02:26:08, instead of 03:00! > a<-as.POSIXlt('2010-04-04 02:26:07',tz="NZ") > a$isdst [1] 1 > b<-as.POSIXlt('2010-04-04 02:26:08',tz="NZ") > b$isdst [1] 0 So does R get its DST information from somewhere else? Any suggestions would be much appreciated! Thanks [[alternative HTML version deleted]] ______________________________________________ R-help@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.______________________________________________ R-help@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.
______________________________________________ R-help@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.
