Check out the FAQ at
How do I produce a dataset based on all possible
pairs of identifiers within each group?
http://www.stata.com/support/faqs/data/pairs.html
Nick
[email protected]
Sen Kunal Dr
> This may seem like a simple question, but I am a beginner in STATA:
>
> I have observations on individuals for various cities. I would like to
> transform my data such that I generate pairs from all
> possible combinations
> of individuals for each city. So if there are 4 individuals
> for a particular
> city, I have 6 pairs (AB, but ruling out BA). How do I do this?
>
> Then I would like to generate a dummy which takes the value
> one if the pair
> satisfies a particular condition (both individuals have
> arrived in the city
> from a particular region outside the city), zero otherwise.
> How can I do this?
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