On Mon, Apr 11, 2011 at 4:49 PM, smoluka <smol...@geo.oregonstate.edu> wrote: > Can anyone tell me why I would get different average nearest neighbor values > for the same set of coordinates between ArcGIS 10 and R? Sometimes the > difference in distance is over 1.3 km.
Edge correction? In a spatial point pattern, points near the boundary of your window are less likely to have a near neighbour because only some of the surrounding space can possibly have points. I think functions in spatstat will correct for this. Make a simple test example and tell us what functions you are using. And also try the r-sig-geo mailing list for this sort of thing. Barry ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
