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Yep, that should work just fine.

(Note, the newer version of the tree doesn't have the "setWeights()" thing but it would be trivial to include inside a "DistanceFunction" implementation.)

Thanks for the info! Replacing the wiki version of your tree for the bitbucket one is one of the very next things I'm doing. I need that iterator now, because I'm occasionally culling too many neighbors via displacement vector, leaving me with too-sparse data. The ability to fetch more will be invaluable!