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Re: st: How to specify a data entry to be NA


From   Ronnie Babigumira <rb.glists@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: How to specify a data entry to be NA
Date   Wed, 25 Apr 2012 22:20:19 +0200

Hi Xianwen
If the variable is numeric you cannot enter NA. 

You could do either of two things, assign a value (or of the feasible range for the variable, i.e, if all values are positive, then you could assign -7 as NA) or use one of Stata's 27 numeric missing values. 

See -help missing- for more on Stata's missing values

hope this helps,

Ronnie 

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On Wednesday, April 25, 2012 at 10:10 PM, Xianwen Chen wrote:

> Hi,
> 
> I want to specify some entries in a data set to be NA (not available).
> Stata does not seem to allow a specification as
> 
> replace foo = NA if _n == bar
> 
> . Can someone tell me the correct to specify a data entry to be NA?
> 
> Thanks.
> 
> Xianwen
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/



*
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