st: Manipulating data in the time series dimension of unbalanced panels

[565656@web.de]

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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