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st: Re: Dropping variables conditionally


From   Friedrich Huebler <huebler@rocketmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Re: Dropping variables conditionally
Date   Wed, 13 Apr 2005 20:23:29 -0700 (PDT)

Ian,

You can use -dropmiss-.

. findit dropmiss

Friedrich Huebler

--- 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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