check the help page; there is a parameter ('units' I thnk) that will let you specify that.
Sent from my iPad On Oct 10, 2011, at 2:57, Alaios <ala...@yahoo.com> wrote: > Thanks a lot. > That helped. > One thing now is to have the difftime(y,x) to always report seconds. There > are times that there is a change in the day and thus the diff will report few > days difference. How can it always report only seconds? > > I would like to thank you in advance for your help > > B.R > Alex > > From: jim holtman <jholt...@gmail.com> > To: Alaios <ala...@yahoo.com> > Cc: "R-help@r-project.org" <R-help@r-project.org> > Sent: Friday, October 7, 2011 5:34 PM > Subject: Re: [R] Handling Time in R > > ?ISOdatetime > > > > x <- ISOdatetime(2011,10,6,16,23,30.539) > > str(x) > POSIXct[1:1], format: "2011-10-06 16:23:30" > > y <- ISOdatetime(2011,10,6,16,23,30.939) > > difftime(y,x) > Time difference of 0.3999999 secs > > > > > On Fri, Oct 7, 2011 at 11:04 AM, Alaios <ala...@yahoo.com> wrote: > > Dear all, > > I would like to ask your help regarding handling time stamps in R. I think > > first I need a reference to read about their logic and how I should handle > > them. > > > > For example, this is a struct I have > > > > > > str(MyStruct$TimeStamps) > > num [1:100, 1:6] 2011 2011 2011 2011 2011 ... > > > > MyStruct$TimeStamps[1,] > > [1] 2011.000 10.000 6.000 16.000 23.000 30.539 > > > > the last field contains seconds.milliseconds. > > > > How I can for example make calculations with time stamps like see if the > > MyStruct$TimeStamps[1,]-MyStruct$TimeStamps[2,] differ more than > > 300millisecond, or 3 days have passed? > > > > I would like to thank you in advance for your suggestions > > > > B.R > > Alex > > > > [[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. > > > > > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > > [[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.