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st: subset (using by ...)

From   Nemo Johnson <>
Subject   st: subset (using by ...)
Date   Thu, 17 Jul 2003 09:29:57 -0400

  I note that in another package, data can be completely subset into separate
temporary datasets without having any effect on the original.  I know, of
course, that stata can do the same thing using "by" or "drop/keep", but the
logic seems different (in Stata, the "by" statements clearly need to
continually recur, and using "keep" requires great caution).

  Yes of course I know this is just a taste issue, but perhaps there is a
command I'm unaware of.  Any suggestions?

  Please include this email address in replies.

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