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Antwort: st: detect unique values of onevariable into a new variable


From   Richard Ochmann <rochmann@diw.de>
To   statalist@hsphsun2.harvard.edu
Subject   Antwort: st: detect unique values of onevariable into a new variable
Date   Mon, 20 Dec 2010 18:04:04 +0100

...
it's not entirely clear to me what you mean by "detect unique values".
does this give what you want?

***
gen country_unique = .
replace country_unique = Country if Country[_n] != Country[_n-1]
***

best,
rich

owner-statalist@hsphsun2.harvard.edu schrieb am 20.12.2010 17:56:07:

> I would like to know if and how I can detect unique values of one
> variable and write them into a new variable.
> 
> For Example:
> 
> Country
> 
> Australia
> Australia
> Belgium
> Belgium
> Germany
> 
> I need a variable which is:
> unique = "Australia" "Belgium" "Germany"
> 
> I don't need:
> unique = "Australia" "Australia" "Belgium" "Belgium" "Germany"
> 
> Thank you!
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