On Fri, Aug 13, 2010 at 4:59 PM, Nikhil Kaza <nikhil.l...@gmail.com> wrote: > > I havent looked at poly2nb code, but would eliminating polygons from the > polygon list based on area, perimeter or ratio of these two, before > constructing the neighbour list work? This would be similar, not identical, > to eliminate in ArcInfo. > http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Eliminate%20%28Data%20Management%29
That's okay for general cleanups of slivers etc, but it wont catch other problems that might manifest themselves via adjacency. My substantive problem uses polygon adjacency in its model, so I was hoping for a way of assessing the correctness of the adjacency graph. I'm pretty sure I can do it with LinesIntersections from rgeos now, its just a bit of a grind to get rid of all the intersections from coincident endpoints. nb2lines is also useful. Barry _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
