rep(c(1:30),each=1440) works!
On Tue, May 21, 2013 at 1:25 PM, Don McKenzie <d...@u.washington.edu> wrote: > Do you want each number in "Date" to be repeated once (as in your example) > or appear 48 times (so that you start over every 1440 rows, as in your > request). > > For the former, > > rep(c(1:30),each=48) > > fills the first 1440 rows. > > > > On 21-May-13, at 1:16 PM, Ye Lin wrote: > > I want to add identifier column (Date) to a time series data frame. I want >> to name the "Date" column be from 1 to 30 every 1440 rows. >> >> Say I have a data like this (I simply my actual data here): >> >> $dat >> >> ID Var >> 1 1 >> 2 4 >> 3 6 >> 4 7 >> 5 7 >> 6 8 >> >> How can I add identifier column (Date) from 1 to 3 every 2 rows and have >> output like this: >> >> ID Var Date >> 1 1 1 >> 2 4 1 >> 3 6 2 >> 4 7 2 >> 5 7 3 >> 6 8 3 >> >> Thanks, >> >> [[alternative HTML version deleted]] >> >> ______________________________**________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> >> PLEASE do read the posting guide http://www.R-project.org/** >> posting-guide.html <http://www.R-project.org/posting-guide.html> >> and provide commented, minimal, self-contained, reproducible code. >> > > > > > > Don McKenzie, Research Ecologist > Pacific Wildland Fire Sciences Lab > US Forest Service > phone: 206-732-7824 > > Affiliate Professor > School of Environmental and Forest Sciences > University of Washington > > > > > > [[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.
