Find coordinates inside polygon using Ruby

Question

How can I determine if coordinate point lies within a polygon using Ruby?

possible duplicate of [Point in Polygon aka hit test](http://stackoverflow.com/questions/217578/point-in-polygon-aka-hit-test) — Phrogz, Jan 17 '11 at 21:34

score 6 · Accepted Answer · edited May 23 '17 at 12:08

6

Jake Scruggs has an entry on the matter here. The theory behind is the classic odd/even ray intersection, and it has been tackled at SO at least here.

edited May 23 '17 at 12:08

Community

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answered Jan 17 '11 at 20:41

tokland

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This answers the question as asked and is a really cool answer. I possibly should have inquired about the best gem/library. – jrhicks Jan 18 '11 at 04:02

Find coordinates inside polygon using Ruby

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