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st: Count the number of observation of the same kind


From   George Chioran <george_chioran@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Count the number of observation of the same kind
Date   Sat, 24 Apr 2010 07:04:35 -0700 (PDT)

Dear statalisters, 

This may be a basic question, but how can you create a  variable X in which there we have the sum of the observations of the same kind of variable Y?
If variable Y has 10 integers: 8, 8, 5, 5, 5, 3, 1, 1, 1, 1 variable X would the integers 2, 2, 3, 3, 3, 1, 4, 4, 4, 4?

Thank you a lot for any ideas.

George


      
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