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st: AW: Drop unused value labels


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: Drop unused value labels
Date   Wed, 3 Mar 2010 10:54:12 +0100

<> 



*************
sysuse auto, clear
la def mylabel 1 "unused"
la def mylabel2 3 "unused"
labelbook, problems
la drop `r(notused)'
*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Elmar Saathoff
Gesendet: Mittwoch, 3. März 2010 10:48
An: statalist@hsphsun2.harvard.edu
Betreff: st: Drop unused value labels

Dear All,

I am wondering whether it is possible to remove all unused value labels 
(i.e. all value labels that are not mapped to a variable) from a dataset 
without having to specify each label name. Would anyone know whether 
there is a way to do that in official stata, or whether a user-written 
program exists?

Thanks in advance for your help, regards,

Elmar
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