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st: replace blank string values


From   richard boylan <richardtb25@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: replace blank string values
Date   Wed, 30 Jun 2010 13:17:42 -0500

I have a dataset which is a panel: id, year where id is the numeric
value the individual.

I also have the name of the individual, however, for some
observations, the name is missing.

How do I go about replacing the missing values for name?

One way that works is
sort id year
by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""
by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""
...
by id: replace name = name[_n + 1] if name == "" & name[_n + 1] ~= ""

However, is there a more efficient way of doing this, say using egen?

Richard
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