Re: [R] Seek general information about time/date storage and functions in R

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Thu 04 Jan 2007 - 17:51:26 GMT

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



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