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st: RE: Drop variables satisfying a condition


From   "Maarten Buis" <M.Buis@fsw.vu.nl>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Drop variables satisfying a condition
Date   Fri, 6 Jul 2007 15:07:28 +0200

---- Guillermo Villa wrote:
> it would be interesting being able to drop all variables in the dataset for 
> which all cases are 0 or missing values. 

foreach var of varlist _all {
	count if `var' == 0 | `var' >= .
	if r(N) == _N drop `var'
}

Hope this helps,
Maarten

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434 

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------

 

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