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st: How to specify a data entry to be NA


From   Xianwen Chen <xianwen.chen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: How to specify a data entry to be NA
Date   Wed, 25 Apr 2012 14:10:36 -0600

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
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