On 1/4/2007 12:42 PM, Ben Fairbank wrote: > Hello R List - > > > > I have to import Excel files (either as .csv files or using RODBC) into > R (2.4.1, Windows) and operate on dates and times (e.g. find minutes > between times, change dates to days of week or analyze by weeks of > year). The help files for format.Date, strptime, as.POSIX, > DateTimeClasses, etc. etc. are informative but perhaps a little terse. > I have googled unsuccessfully for a more general description of how R > represents times and dates, and the methods (e.g. date arithmetic) for > working with them. Can a reader point out such an introduction, > preferably on-line? >
There was an article in R-News on just this topic, in the R Help Desk in http://cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf . Duncan Murdoch ______________________________________________ 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.
