Try: Sys.setenv(TZ="EST") plot(y ~ t, type = "l")
You can save TZ before you set it and then restore it. On Mon, Jan 26, 2009 at 5:47 PM, Jim Porzak <[email protected]> wrote: > Friends, > > I have a POSIXct vector "located" in EST timezone. When I plot against > it here in PST, the time axis is shifted 3 hours back in time. IOW, > plot adjusts for time zone difference. Now that's really great, if > that's what one wants. However, I want time axis to use actual times > in object (without any shift). > > For example: > > n <- 360 > y <- rnorm(n) > t <- seq(from = as.POSIXct("2009-01-26 12:00:00", tz = "EST"), by = > 60, length.out = n) > head(t) > #[ 1] "2009-01-26 12:00:00 EST" "2009-01-26 12:01:00 EST" "2009-01-26 > 12:02:00 EST" > # [4] "2009-01-26 12:03:00 EST" "2009-01-26 12:04:00 EST" "2009-01-26 > 12:05:00 EST" > Sys.timezone() > # [1] "PST" > > #But doing: > plot(y ~ t, type = "l") > > results in plot starting at 09:00 (here in California) > > I've poked around in help, etc but haven't any way to force use of > timezone in t. > > What am I missing? > > TIA, > Jim Porzak > TGN.com > San Francisco, CA > http://www.linkedin.com/in/jimporzak > use R! Group SF: http://ia.meetup.com/67/ > > ______________________________________________ > [email protected] 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? ______________________________________________ [email protected] 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.
