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st: Generating a new var from last 11 character in a string


From   lars Folkestad <statalars@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: Generating a new var from last 11 character in a string
Date   Sat, 14 Dec 2013 23:53:29 +0100

Dear listers

I want to do generate a new var from the last 11 character of a string variable. I normally count the possitions that i want and use the substring command, but my oldvar has contains different number of characters. The first position of interest maybe nr 1 in some observations and number 15 in others. 

Whats the best way to do this?

Lars
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