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Re: Re: Sorting by geographical proximity / clumping groups of items based on X and Y

by t'mo (Pilgrim)
on Jul 18, 2002 at 16:09 UTC ( #182881=note: print w/replies, xml ) Need Help??


in reply to Re: Sorting by geographical proximity / clumping groups of items based on X and Y
in thread Sorting by geographical proximity / clumping groups of items based on X and Y

Shouldn't step 3 in your algorithm description:
|S(e)| <= |S(f)|
read
|S(e)| > |S(f)|
? (Not having been a Math major, of course, could lead me to misinterpret "|S(t)|", which here I'm interpreting as "the size of set t".)
Anyway, I had intended to suggest an algorithm dealing with sorting based on the lengths of line segments, but I now realize that's probably not much use in this case (since vroom wants to find the clumps, not necessarily a point). And reading further down the page, I like Ntromda's idea, but I, like him/her, wouldn't know how to begin coding it (without thinking about it for a long while...).
  • Comment on Re: Re: Sorting by geographical proximity / clumping groups of items based on X and Y

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