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disp8
2009 Sep 17
3
generating unordered combinations
Hi,
I am trying to generate all unordered combinations of a set of
numbers / characters, and I can only find a (very) clumsy way of doing
this using expand.grid. For example, all unordered combinations of
the numbers 0, 1, 2 are:
0, 0, 0
0, 0, 1
0, 0, 2
0, 1, 1
0, 1, 2
0, 2, 2
1, 1, 1
1, 1, 2
1, 2, 2
2, 2, 2
(I have not included, for example, 1, 0, 0, since it is equivalent to
0, 0, 1).
I have