Here's what I get > head(tt) [1] "2008-02-20 03:09:51 EST" "2008-02-20 12:12:57 EST" [3] "2008-03-05 09:11:28 EST" "2008-03-05 17:59:40 EST" [5] "2008-03-09 09:00:09 EDT" "2008-03-29 15:57:16 EDT"
But I can't figure out how to plot this now. plot(tt) does not appear to be univariate. I get the same plot with plot(as.Date(tt)), which would make sense if time is used because of the range of the dates and the insignificance of the times of day. > head(as.Date(tt)) [1] "2008-02-20" "2008-02-20" "2008-03-05" "2008-03-05" "2008-03-09" [6] "2008-03-29" plot(tt) and plot(as.Date(tt)) give something like year as a function of the rest of the date. Here they are [image: tt.png] [image: as.Date.tt.png] Here are the addresses http://thomaslevine.org/time/tt.png http://thomaslevine.org/time/as.Date.tt.png Tom On Fri, Jun 19, 2009 at 6:21 PM, Gabor Grothendieck <ggrothendi...@gmail.com > wrote: > Try this: > > > Lines <- "Sun, 14 Jun 2009 07:33:00 -0700 > Sun, 14 Jun 2009 08:35:10 -0700 > Sun, 14 Jun 2009 21:26:34 -0700 > Mon, 15 Jun 2009 19:47:47 -0700 > Wed, 17 Jun 2009 21:50:41 -0700" > > # L <- readLines("myfile.txt") > L <- readLines(textConnection(Lines)) > tt <- as.POSIXct(L, format = "%a, %d %b %Y %H:%M:%S") > > > > On Fri, Jun 19, 2009 at 6:06 PM, Thomas Levine<thomas.lev...@gmail.com> > wrote: > > I am analysing occurrences of a phenomenon by time, and each of these > > timestamps taken from email headers represents one occurrence. (The last > > number is the time zone.) I can easily change the format. > > > > Sun, 14 Jun 2009 07:33:00 -0700 > > Sun, 14 Jun 2009 08:35:10 -0700 > > Sun, 14 Jun 2009 21:26:34 -0700 > > Mon, 15 Jun 2009 19:47:47 -0700 > > Wed, 17 Jun 2009 21:50:41 -0700 > > > > I've found documentation for a plethora of ways of importing time data, > but > > I can't decide how to approach it. Any ideas on what may be the cleanest > > way? The only special concern is that I'll want to plot these data by > date > > and time, meaning that I would rather not bin all of the occurrences from > > one day. > > > > The time zone isn't important as these are all local times; the time zone > > only changes as a function of daylight savings time, so I probably > shouldn't > > use it at all. > > > > Tom > > > > [[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. > > > [[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.
