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st: RE: replace blank string values


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: replace blank string values
Date   Wed, 30 Jun 2010 20:26:27 +0200

<>


-sort-ing allocates the name to the end, so you can pick it up there...

***********
clear*
set obs 5
gen byte id=_n
expand 3

inp str10 name
""
Nick
""
Kit
""
""
""
Ben
""
Maarten
""
""
""
""
Martin

l, sepby(id)
bys id (name): replace name=name[_N]
l, sepby(id)
***********


HTH
Martin


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of richard boylan
Sent: Mittwoch, 30. Juni 2010 20:18
To: statalist@hsphsun2.harvard.edu
Subject: st: replace blank string values

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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