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Re: st: Manipulating data in the time series dimension of unbalanced panels
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Manipulating data in the time series dimension of unbalanced panels
Date
Fri, 23 Aug 2013 17:38:25 +0100
bysort Country (time) : gen Dummy2 = sum(Dummy1) >= 1
See also http://www.stata.com/support/faqs/data-management/first-and-last-occurrences/
Nick
[email protected]
On 23 August 2013 17:17, <[email protected]> wrote:
> Dear Statalist user,
>
>
> This one is probably quite easy but I did not find a solution yet. Perhaps someone of you could help me?
>
> I have an unbalanced panel data set with a binary dummy variable ("Dummy1"). Now I want Stata to generate a new dummy variable (Dummy2) which is coded 1 after the first dummy variable once took the value 1.
>
> Example:
>
> time Country Dummy1 Dummy2
> 2000q1 1 . .
> 2000q2 1 0 0
> 2000q3 1 0 0
> 2000q4 1 1 1
> 2001q1 1 0 1
> 2001q2 1 0 1
> 2000q1 2 0 0
> 2000q2 2 1 1
> 2000q3 2 0 1
> 2000q4 2 0 1
> 2001q1 2 0 1
> 2002q1 2 . .
>
>
> Thanks for your effort and best regards,
> Kurt Becker
>
>
>
>
>
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