[R] When I cbind the POSIXct gets lost

[Matthew Keller]

Ken,

not sure, but you might try

data.frame(whatever1=x[,1],whatever2=y)

this should maintain the classes of the vectors. I'm guessing that y
and x are of different classes. From ?cbind:

"For the default method, a matrix combining the ... argument.  The
type of a matrix result determined from the highest type of any of the
inputs in the hierarchy raw < logical < integer < real < complex <
character < list "

Matt


On Feb 8, 2008 2:59 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).
>
>
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-- 
Matthew C Keller
Asst. Professor of Psychology
University of Colorado at Boulder
www.matthewckeller.com