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st: Transforming Unique IDs


From   Dennis Kramer <dkramerii@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Transforming Unique IDs
Date   Mon, 23 May 2011 06:17:46 -0400

Greetings,

I am working with a large panel data set and I need to transform the
current unique IDs into a new set of unique IDs while maintaining the
panel nature of the data. For example,

Year 1     ID1     Var 1    Var2     Var3    NewID1
Year 2     ID1     Var 1    Var2     Var3    NewID1
Year 3     ID1     Var 1    Var2     Var3    NewID1
Year 1     ID2     Var 1    Var2     Var3    NewID2
Year 2     ID2     Var 1    Var2     Var3    NewID2
Year 3     ID2     Var 1    Var2     Var3    NewID2
Year 1     ID3     Var 1    Var2     Var3    NewID3
Year 2     ID3     Var 1    Var2     Var3    NewID3
Year 3     ID3     Var 1    Var2     Var3    NewID3

does anyone have a algorithm to produce a new set of unique IDs while
maintaining the panel function? I have looked through the current FAQs
and past listserv discussions and have not found any suggestions that
would create a new ID while maintaining the panel groupings.

Thank you,
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