[R] Rearranging a data frame for multiple observations

[Newbie19_02]

Hi there,

I think I'm struggling with a fairly simple problem but can't seem to solve
it.  I have multiple observations for one unique identifier.  Ultimately I
want to end up with one line per identifier with multiple observations in
rows. I'm really stuck any help would be really appreciated.


CAO0337134	05/09/95
CAO0337134	27/09/05
CAO0347741	10/10/04
CAO0347741	12/10/04
CAO0367128	11/07/05
CAO0367128	12/07/05
CAO0367128	14/07/05
CAO0367128	19/09/97
CAO0367128	20/09/97
CAO0374110	14/11/89
CAO0374110	17/11/89
CAO0374779	01/10/99
CAO0374779	28/09/99
CAO0374779	29/09/99

Thanks
Natalie
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