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st: dropping missing variables


From   Ben.Kriechel@roa.unimaas.nl
To   statalist@hsphsun2.harvard.edu
Subject   st: dropping missing variables
Date   Wed, 10 Sep 2003 16:22:37 +0200

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Is there a way in which I can drop variables that have only missing
observations? This is something that happens quite often in general
purpose surveys in which specific sub-groups are analyzed. It is quite
annoying to keep all those unnecessary variables in memeory, and quite
tiring to identify and eliminate them all.

Any suggestions are welcome. 

groetjes, 
Ben Kriechel

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