Re: [R] When I cbind the POSIXct gets lost

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Sat, 9 Feb 2008 13:35:13 -0500

The point is don't use cbind -- use data.frame.

On Feb 9, 2008 1:20 PM, Ken Spriggs <ksspriggs_at_gmail.com> wrote:
>
> Gabor - Thanks. I can recreate your example without any problem but I don't
> understand the relevance.
> Is turning the result of the cbind() into a dataframe what you're telling
> me? If so, I tried that and I'm still stuck with the loss of the POSIXct.
> (If not I'm afraid I missed the point.)
>
>
>
>
> Gabor Grothendieck wrote:
> >
> > Use data.frame:
> >
> >> tt <- ISOdate(2000, 1:3, 1)
> >> cbind(tt, tt)
> > tt tt
> > [1,] 946728000 946728000
> > [2,] 949406400 949406400
> > [3,] 951912000 951912000
> >> data.frame(tt, tt)
> > tt tt.1
> > 1 2000-01-01 12:00:00 2000-01-01 12:00:00
> > 2 2000-02-01 12:00:00 2000-02-01 12:00:00
> > 3 2000-03-01 12:00:00 2000-03-01 12:00:00
> >
> >
> > On Feb 8, 2008 4:59 PM, Ken Spriggs <ksspriggs_at_gmail.com> wrote:
> >>
> >> I would like to create a new dataframe from the DateTime column of an
> >> existing dataframe and a numeric vector. When I do cbind(x[,1], y) the
> >> result is:
> >>
> >> [1,] 1199370600 12.500
> >> [2,] 1199371200 69.375
> >> [3,] 1199371800 23.750
> >>
> >> where the first column you see used to look like:
> >> "2008-01-03 08:30:00 Central Standard Time"
> >> "2008-01-03 08:40:00 Central Standard Time"
> >> "2008-01-03 08:50:00 Central Standard Time"
> >>
> >> How do I keep the DateTime from getting converted? I've tried
> >> as.POSIXct()
> >> to convert it back (no luck).
> >>
> >>
> >> --
> >> View this message in context:
> >> http://www.nabble.com/When-I-cbind-the-POSIXct-gets-lost-tp15364786p15364786.html
> >> Sent from the R help mailing list archive at Nabble.com.
> >>
> >> ______________________________________________
> >> R-help_at_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.
> >>
> >
> > ______________________________________________
> > R-help_at_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.
> >
> >
>
> --
> View this message in context: http://www.nabble.com/When-I-cbind-the-POSIXct-gets-lost-tp15364786p15380762.html
>
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help_at_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.
>



R-help_at_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. Received on Sat 09 Feb 2008 - 18:39:15 GMT

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