This game you are playing is quite dangerous, and I recommend that you avoid this assiduously. Look at the lubricate library or use the chron or Date classes. Timestamps are rather poor candidates for numeric operations, and the vagaries of timezones are quite a headache. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity.
Mike Williamson <this.is....@gmail.com> wrote: Hi, In short, I would like to know if there is any way to convert a numeric into a date, similar to how strptime() can convert a string to a date time class? There are some functions, etc. which don't work well with dates, and tend to force them into numerics. I understand that the number it spits back is the number of seconds since the beginning of 1970 (see the first few sentences of the "Details" portion of ?DateTimeClasses). However, it's a bit of a hassle to convert that by hand. I can create a function to do this, and it isn't so hard, but I found it hard to believe such a function didn't already exist, so I wanted to ask the community. As an example, today (Oct 5th 2011 at approximately 4:30pm, Pacific time) is approximately 1317857320 as a numeric, but I would like to know how to go from that number back to the "2011-10-05 16:28:39 PDT" date time class which originally generated it. Thanks! Mike --- XKCD <http://www.xkcd.com> [[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.
