> It wouldn't be guaranteed to produce any usable permutation, but it seems > like it would be much faster and so could be repeated until an acceptable > vector is found. What do you think? > > Thanks-- > Andy >
I think I am not understanding what your ultimate goal is so I'm not sure I can give you appropriate advice. Are you looking for a single valid permutation or all of them? Since that constraint sets a ceiling on each subsequent value, it seems like you could solve this problem more easily and quickly by using a search strategy instead of random sampling or generating all permutations then testing. The constraint will help prune the search space so you only generate valid permutations. Once you are examining a particular element you can determine which of the additional elements would be valid, so only consider those. --jason ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
