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Re: st: Keep specific observation
From
Yun <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Keep specific observation
Date
Sat, 3 Sep 2011 01:52:32 +1000
Thank you very much Nick.
On 3 Sep 2011, at 00:12, Yun <[email protected]> wrote:
> I need help in stata command to drop/keep certain observations using stata 11.0
>
>
> There are two column of different data. Fisrt column is A,B,C (unique ID). The second column has data 1,2,3.
>
> Column 1 Column2
> A 1
> A 2
> A 3
> B 1
> B 2
> C 1
> C 2
> C 3
> D 1
> D 3
>
>
> I need all the observations that satisfy this condition --> column 1 will have group of column 2 (1,2,3)--> for instance A & C.
>
> I do not know the command for this.
>
> Thank you.
>
> Regards,
>
> Yun
>
>
>
>
>
>
> *
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