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st: Variable Creation


From   drreg@earthlink.net
To   statalist@hsphsun2.harvard.edu
Subject   st: Variable Creation
Date   Mon, 26 Apr 2010 14:32:45 -0400 (EDT)

Dear Statalist:

I have a partial listing of the following variable, formatted as str9:

sitecode
--------
37087M022
37087M022
37173M035
37173M035
370810009
370810009
370810009
370810009
370810009
370810009
370810009
370870035
370870035
370870035
370870035
370870035

I would like to create an additional variable, site, as follows: site = xxx if sitecode = 37xxxyyyy. Site is the 3rd, 4th, and 5th characters of sitecode. I don't know how to do this, and what's more frustrating, I don't even know what to input in order to use help.

Sorry if this is too basic, but I do appreciate any help.

reg 
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