On Mon, Sep 19, 2011 at 9:03 AM, <mcross@exemail.com.au> wrote:
> * Consider the following...
>
> clear
> input str1 group sample
> A 3
> A 2
> A 2
> B 2
> B 3
> B 1
> end
>
> list
>
> * Each sample should occur only once within a group.
> * Thus I'd like to create a tag to highlight that sample 2
> * is represented twice within group A
bys group sample : gen byte tag = _N > 1
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/