[R] Working with combinations

[Duncan Temple Lang]

I think there are several packages that implement combinations and several
that allow you to specify a function  to be called when each vector of combinations
is generated.  I can't recall the names of all such packages, but the
Combinations package on www.omegahat.org/Combinations is one.

 D.

Herm Walsh wrote:
> I am working with the combinations function (available in the gtools package).  However, rather than store all of the possible combinations I would like to check each combination to see if it meets a certain criteria.  If it does, I will then store it.
> 
> I have looked at the combinations code but am unsure where in the algorithm I would be able to operate on each combination.
> 
> Thanks!
> 
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