From: jim holtman <jholtman_at_gmail.com>

Date: Tue 20 Dec 2005 - 03:12:37 EST

Date: Tue 20 Dec 2005 - 03:12:37 EST

Forgot you were asking for the end date, so just subtract a day:

> seq(x, by='month', length=2)[2] - 24*3600

**[1] "2005-12-31 EST"
**
On 12/19/05, jim holtman <jholtman@gmail.com> wrote:

*>
*

> Here is one way using POSIX: (you can create a function to do this)

*>
**> > x <- as.POSIXlt('2005-12-16') # a date
**> > x
**> [1] "2005-12-16"
**> > dput(x) #structure of the date
**> structure(list(sec = 0, min = 0, hour = 0, mday = 16, mon = 11,
**> year = 105, wday = 5, yday = 349, isdst = 0), .Names = c("sec",
**> "min", "hour", "mday", "mon", "year", "wday", "yday", "isdst"
**> ), class = c("POSIXt", "POSIXlt"))
**> > x$mday <- 1 # reset to first of the month
**> > seq(x, by='month', length=2)[2] # select 2nd number in the sequence
**> [1] "2006-01-01 EST"
**> >
**>
**>
**>
**> On 12/19/05, t c <quantpm@yahoo.com> wrote:
**> >
**> > I have a vector of dates.
**> >
**> > I wish to find the month end date for each.
**> >
**> > Any suggestions?
**> >
**> > e.g.
**> >
**> > For 12/15/05, I want 12/31/05,
**> >
**> > For 10/15/1995, I want 10/31/1995, etc
**> >
**> >
**> > __________________________________________________
**> >
**> >
**> >
**> > [[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<http://www.r-project.org/posting-guide.html>
**> >
**>
**>
**>
**> --
**> Jim Holtman
**> Cincinnati, OH
**> +1 513 247 0281
**>
**> What the problem you are trying to solve?
*

-- Jim Holtman Cincinnati, OH +1 513 247 0281 What the problem you are trying to solve? [[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.htmlReceived on Tue Dec 20 03:22:42 2005

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