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Re: st: Dropping variables conditionally


From   Ronán Conroy <rconroy@rcsi.ie>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Dropping variables conditionally
Date   Thu, 14 Apr 2005 10:36:24 +0100

Ian Watson wrote:

My last message had it's first paragraph swallowed by the server. It
read:


Is there an easy way to drop variables depending on certain
conditions. The syntax for -drop- shows no if qualifier is allowed
for the varlist syntax, only for the observation syntax.
Try -dropmiss-, written by the prolific Nick Cox.

Alternatively, if you needed to apply more complex conditions, you could add a prefix such as drop_ to the names of the variables that met the conditions, then drop them using

drop *_drop



--

Ronan M Conroy (rconroy@rcsi.ie) Senior Lecturer in Biostatistics Royal College of Surgeons Dublin 2, Ireland +353 1 402 2431 (fax 2764) -------------------- Just say no to drug reps http://www.nofreelunch.org/

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