Oleg's demo script pointpoly.ijs is elegant as we have seen repeatedly from its author. The heart of the script is the verb crossPnP also at the same jwiki link:
http://www.jsoftware.com/jwiki/Phrases/Geometry (The code is under the heading "Crossing Number" near the bottom of the page.) In other threads, J contributions to RosettaCode.org are being developed and discussed. Is it appropriate to add crossPnP at the following link or does it violate the spirit of the expressed problem? http://rosettacode.org/wiki/Point_in_polygon_(ray_casting_algorithm) -- (B=) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
