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Re: st: Re: Dropping variables conditionally


From   Ian Watson <i.watson@econ.usyd.edu.au>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Re: Dropping variables conditionally
Date   Thu, 14 Apr 2005 13:44:58 +1000

Dear Friedrich,

Thanks very much. Exactly what I was looking for.

Ian


Thursday, April 14, 2005, 1:23:29 PM, you wrote:

FH> Ian,

FH> You can use -dropmiss-.

FH> . findit dropmiss

FH> Friedrich Huebler

FH> --- Ian Watson <i.watson@econ.usyd.edu.au> wrote:
>>   My particular task is to eliminate all variables from the dataset
>>   which are empty, that is, have no observations. The following bit
>>   of code has done this, but surely there is a simpler way which I
>>   have overlooked?
>> 
>> local droplist "drop "
>> foreach v of varlist * {
>>     qui count if !mi(`v')
>>     if r(N) == 0 local droplist "`droplist' `v'" 
>> }
>> `droplist'
>> 
>> 
>> -- 
>> Kind regards, 
>> Ian
>> 
>> -------------------------------
>> Ian Watson
>> Senior Researcher
>> acirrt, University of Sydney
>> NSW, 2006, Australia
>> 
>> phone: 02 9351 5622
>> email:i.watson@econ.usyd.edu.au
>> www.acirrt.com
>> -------------------------------


		
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