in reply to Re^7: searching polygons not merged
in thread searching polygons not merged

> Not sure what you mean here.

you are suggesting > n**2/2 comparisons, ie 50m for 10k polygons ... that's - sorry - insane.

Preordering can eliminate most of the fruitless ones.

See my first reply.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

In Section Seekers of Perl Wisdom