For those whose search lands on this post, here is the solution I found that worked
well.80.2<-data.frame(well.80.2,week=floor(as.numeric(difftime(strptime(well.80.2$date,"%m/%d/%Y %H:%M",tz=""),strptime(well.80.2$date[1],"%m/%d/%Y %H:%M",tz=""),tz="",units="hours"))/168)) -- View this message in context: http://r.789695.n4.nabble.com/Add-1-week-to-date-with-hours-included-for-subset-tp2216062p2216710.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
