[R] Format about Date and time

[Aimin Yan]

I have a data set like this:

 > head(FormatedData)
     ID Target Actual     Date     Time
1 2030      0  -57.0 12/20/08 17:03:00
2 2030     90   90.0 12/20/08 18:41:00
3 2030     45   43.8 12/21/08 14:36:00
4 2030      0  -23.8 12/21/08 19:30:00
5 2030     90   90.2 12/21/08 21:48:00
6 2030     45   48.6 12/22/08 13:02:00

I wan to convert the format of Date and Time, so I did this:

pdate <- as.POSIXct(strptime(FormatedData$Date,"%m/%d/%Y"))
ptime <- as.POSIXct(strptime(FormatedData$Time,"%H:%M:%S"))

but I get the following format:

 > head(NewFormatedData)
     ID Target Actual     Date     Time   pdate               ptime
1 2030      0  -57.0 12/20/08 17:03:00 8-12-20 2009-03-14 17:03:00
2 2030     90   90.0 12/20/08 18:41:00 8-12-20 2009-03-14 18:41:00
3 2030     45   43.8 12/21/08 14:36:00 8-12-21 2009-03-14 14:36:00
4 2030      0  -23.8 12/21/08 19:30:00 8-12-21 2009-03-14 19:30:00
5 2030     90   90.2 12/21/08 21:48:00 8-12-21 2009-03-14 21:48:00
6 2030     45   48.6 12/22/08 13:02:00 8-12-22 2009-03-14 13:02:00

in ptime, it includes the current date, I don't want this,
actually, I want to have the following formats:

     ID Target Actual     Date     Time    pdate               ptime
1 2030      0  -57.0 12/20/08 17:03:00  2008-12-20      17:03:00
2 2030     90   90.0 12/20/08 18:41:00 2008-12-20      18:41:00
3 2030     45   43.8 12/21/08 14:36:00  2008-12-21     14:36:00
4 2030      0  -23.8 12/21/08 19:30:00   2008-12-21     19:30:00
5 2030     90   90.2 12/21/08 21:48:00  2008-12-21      21:48:00
6 2030     45   48.6 12/22/08 13:02:00  2008-12-22     13:02:00

Does anyone know how to do these?