Try this: library(chron) t1 <- chron("1/1/2006", "00:00:00") t2 <- chron("12/31/2006", "23:45:00") deltat <- times("00:15:00") tt <- seq(t1, t2, by = times("00:15:00"))
Note that if you have some data and your intention is simply to create the index for it so you can create a zoo or zooreg object then the zooreg constructor can do it for you. For example, a series of 10 values starting at t1 with successive points spaced 15 minutes apart is: library(zoo) zooreg(1:10, start = t1, deltat = as.numeric(deltat)) On Thu, Jun 26, 2008 at 5:36 PM, stephen sefick <[EMAIL PROTECTED]> wrote: > I would like a sequence of dates with a time step of 15 minutes > starting: > 1/1/2006 00:00:00 - 12/31/2006 23:45:00 > > function(x) { > chron(sub(" .*", "", x), gsub(".* (.*)", "\\1:00", x)) > } > > this is the piece of code I use to read in zoo objects > for any help I would be grateful I have tried sequence and I can not seem > to get it to work > > -- > Let's not spend our time and resources thinking about things that are so > little or so large that all they really do for us is puff us up and make us > feel like gods. We are mammals, and have not exhausted the annoying little > problems of being mammals. > > -K. Mullis > > [[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.