Your hunch is wrong. Start by typing ?Date at the R prompt. Continue with ?as.Date
Then to find out if the date is earlier than today delta <- thedate - Sys.Date() (of course, that will change if you use it tomorrow) Getting your indicator variable can be done very easily with base R; no packages needed. -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 3/4/15, 6:54 AM, "Brian Hamel" <bh16...@student.american.edu> wrote: >Hi all, > >I have a dataset that includes a "date" variable. Each observation >includes >a date in the form of 2/15/15, for example. I'm looking to create a new >indicator variable that is based on the date variable. So, for example, if >the date is earlier than today, I would need a "0" in the new column, and >a >"1" otherwise. Note that my dataset includes dates from 1979-2012, so it >is >not one-year (this means I can't easily create a new variable 1-365). > >How does R handle dates? My hunch is "not well," but perhaps there is a >package that can help me with this. Let me know if you have any >recommendations as to how this can be done relatively easily. > >Thanks! Appreciate it. > >Best, >Brian > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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 -- To UNSUBSCRIBE and more, see 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.
