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st: AW: Drop unused value labels

From   "Martin Weiss" <>
To   <>
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)'


-----Ursprüngliche Nachricht-----
[] Im Auftrag von Elmar Saathoff
Gesendet: Mittwoch, 3. März 2010 10:48
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,

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