Try this: set the timezone to what you want before plotting: > tzsave <- Sys.getenv("TZ") # save current > Sys.setenv(TZ="GMT") # set to whatever > plot(x,rep(1,11)) # plot > Sys.setenv(TZ=tzsave) # restore > plot(x,rep(1,11)) # plot in original time zone
On Wed, Jul 8, 2009 at 2:21 AM, Britton Stephens<steph...@ucar.edu> wrote: > the help page for plot.POSIXct says > > "As from R 2.9.0 the date-times for a '"POSIXct"' input are > interpreted in the timwzonw give by the '"tzone"' attribute it > there is one, otherwise the current timezone. (Earlier vrsions > always used the current timezone.)" > > however I am using 2.9.0 on linux and the following still happily produces > an x-axis in local (MDT) time > >> x=strptime(paste('09-01-01 00:00:00',sep=''),format='%y-%m-%d >> %H:%M:%S',tz="GMT")+60*60*24*(seq(0.5,1.5,.1)) >> x > [1] "2009-01-01 12:00:00 GMT" "2009-01-01 14:24:00 GMT" > [3] "2009-01-01 16:48:00 GMT" "2009-01-01 19:12:00 GMT" > [5] "2009-01-01 21:36:00 GMT" "2009-01-02 00:00:00 GMT" > [7] "2009-01-02 02:24:00 GMT" "2009-01-02 04:48:00 GMT" > [9] "2009-01-02 07:12:00 GMT" "2009-01-02 09:36:00 GMT" > [11] "2009-01-02 12:00:00 GMT" >> attributes(x) > $class > [1] "POSIXt" "POSIXct" > > $tzone > [1] "GMT" > >> plot(x,rep(1,11)) > > Is this a bug, or am I missing something? Thanks a lot! > Britt > > -- > Britton B. Stephens > National Center for Atmospheric Research > P.O. Box 3000, 1850 Table Mesa Drive > Boulder, CO 80307-3000 > Phone: (303) 497-1018 > Fax: (303) 497-1092 > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.