Re: [R] convert to chron objects

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Thu 14 Jul 2005 - 07:04:05 EST

On 7/13/05, Young Cho <iidn01@yahoo.com> wrote:
>
> Hi,
>
> I have a column of a dataframe which has time stamps
> like:
>
> > eh$t[1]
> [1] 06/05/2005 01:15:25
>
> and was wondering how to convert it to chron variable.
> Thanks a lot.

   Try this:

# test data frame eh containing a factor variable t eh <- data.frame(t = c("06/05/2005 01:15:25", "06/07/2005 01:15:25"))

# substring converts factor to character and extracts substring chron(dates = substring(eh$t, 1, 10), times = substring(eh$t, 12))

See ?chron for more info. There is an article on dates in R News 4/1 and although it does not specifically answer this question it may be useful with chron and also provides a reference to more chron info elsewhere.

        [[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 Received on Thu Jul 14 07:08:54 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:33:38 EST