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st: How to form every combination of n variables


From   tiago.pereira@incor.usp.br
To   statalist@hsphsun2.harvard.edu
Subject   st: How to form every combination of n variables
Date   Fri, 5 Oct 2007 01:18:08 -0300 (BRT)

Dear Statalisters,

Suppose I have the following dataset:

gene1 gene2 gene3 gene 4
0 0 1 0
1 0 2 0
2 5 6 8
3 2 3 5
4 4 5 6
5 1 5 6
6 1 2 3
7 7 5 6
8 7 5 6
9 4 8 5
10 4 5 6

Is there a way to form every combination of these 4 variables without
depending on multiple datasets? I am doing this task by generating four
distinct datasets (one for each variables) and then using the -cross-
command. However, it would be nice if there is a more straightforward
solution to do that.


Thank you.

Tiago



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