Mostly agree, except that I would suggest hardcoding the notion of "in the future", so that you don't get surprises when someone reruns your code 20 years from now.
-pd > On 28 Dec 2017, at 21:54 , Simmering, Jacob E <jacob-simmer...@uiowa.edu> > wrote: > > Your dates have an incomplete year information with 34. R assumes that 00-68 > are 2000 to 2068 and 69 to 99 are 1969 to 1999. See ?strptime and the details > for %y. > > You can either append “19” to the start of your year variable to make it > completely express the year or check if the date is in the future (assuming > all dates should be in the past) and subtract 100 years from the date. > > >> On Dec 28, 2017, at 11:13 AM, Ramesh YAPALPARVI >> <ramesh.yapalpa...@icloud.com> wrote: >> >> Hi all, >> >> I’m struggling to get the dates in proper format. >> I have dates as factors and is in the form 02/27/34( 34 means 1934). If I use >> >> as.Date with format %d%m%y it gets converted to 2034-02-27. I tried changing >> the origin in the as.Date command but nothing worked. Any help is >> appreciated. >> >> Thanks, >> Ramesh >> ______________________________________________ >> 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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Office: A 4.23 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ 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.
