Here is one way: Vector1 <- c("20080621.00","20080623.00") Vector2 <- c("20080620.00","20080622.00") do.call(difftime, c(apply(cbind(time1=Vector1,time2=Vector2),2, function(x) strptime(x,format="%Y%m%d.00")), units="hours"))
see ?strptime, ?difftime and http://cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf --- [EMAIL PROTECTED] wrote: > Dear R users, > > I have a problem computing time differences using R. > > I have a date that are given using the following format: 20080620.00, where > the 4 first digits represent the year, the next 2 ones the month and the > last > 2 ones the day. I would need to compute time differences between two > vectors > of this given format. > > I tried around trying to change this format into any type of time serie > without any succes. > > Could some one provide me with some useful suggestion and/or tip to know > where to look? > > I am using R-2.4.0 under Windows XP > > Thanks for your help, > > Vincent > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch 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. > ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. ______________________________________________ R-help@stat.math.ethz.ch 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.