You have a POSIXlt object, a list of length 9.
Try ?as.POSIXct.
On 10 Oct 2003, David Whiting wrote:
>
> Hi,
>
> I am trying to parse a date (that is read in as a factor) and add it
> to a dataframe. The length of the parsed date is shorter than the
> length of unparsed date and I therefore cannot add it to the dataframe:
>
> > x
> [1] 20030807 20030807 20030807 20030808 20030809 20030809 20030809
20030809
> [9] 20030808 20030808 20030809 20030808 20030808 20030819 20030819
20030821
> .
> .
> .
> [129] 20030808 20030805 20030726 20030810 20030805 20030811 20030816
20030818
> [137] 20030811
>
> > length(x)
> [1] 137
> > xParsed <- strptime(as.character(x), "%Y%m%d")
> >
> > xParsed
> [1] "2003-08-07" "2003-08-07" "2003-08-07"
"2003-08-08" "2003-08-09"
> [6] "2003-08-09" "2003-08-09" "2003-08-09"
"2003-08-08" "2003-08-08"
> .
> .
> .
> [131] "2003-07-26" "2003-08-10" "2003-08-05"
"2003-08-11" "2003-08-16"
> [136] "2003-08-18" "2003-08-11"
> > length(xParsed)
> [1] 9
> >
> > dta$dateint <- xParsed
> Error in "$<-.data.frame"(`*tmp*`, "dateint", value
= xParsed) :
> replacement has 9 rows, data has 137
>
>
>
> platform i686-pc-linux-gnu
> arch i686
> os linux-gnu
> system i686, linux-gnu
> status
> major 1
> minor 8.0
> year 2003
> month 10
> day 08
> language R
>
>
> Can someone tell me what I'm doing wrong?
>
> Thanks.
>
>
>
>
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595