I'm having a hard time identifying duplicate points. Attached is a definition that seems like it would work. So far using it sometimes works better than, and sometimes worse or the same than the definition offered here: http://www.grasshopper3d.com/forum/topics/how-to-remove-duplicate-p... .

But neither work as well as the removeDuplicatPts component available in the Kangaroo plug-in. In the attached, it fails to identify two duplicate points. As vertices of a dodecahedron, there should only remain 12 points. I want to develop my own definition with the same consistency as the Kangaroo version for a few reasons:

• I don't want to be so dependent on the Kangaroo component -- I had a few difficult days without it when it didn't work with the latest GH update.
• Since without it, I've gotten curious and simply want to understand how to program this.
• And most importantly, I need index identification of duplicate points more than the raw elimination of them. The Kangaroo component doesn't offer this and I plan to use point location identifiers to help remove duplicates of more complicated objects.

It seems like the problem is due to incorrectly sorting zero values that show up as extremely small exponentials e-15 or e-16; But I'm not sure. Adding a small but cumulatively larger value to each list item being sorted seems to help to a degree; but not enough.

Any thoughts about improving this definition or suggestions about a completely different approach would be great.