Looking through the areas using the GetNeighbors() function would probably work.
Larry Manire From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Aniruddha Banerjee Sent: Tuesday, August 12, 2008 8:19 PM To: [email protected] Subject: [Maptitude] polygon merging based on adjacency polygon merging based on adjacency Hi, I have ~9000 polygons (voronoi polygons based on road interections, so all are convex and nice looking). I am trying to reduce the # of polygons to ~half of 9000 or ~4500 by merging adjacent polygons. Using the 'merge geography function' in Maptitude allows only to merge by similar values but not by adjacency. Is there any Maptitude function/GISDK code that does (pairwise) merging based on adjacency? Any GISDK code will be useful even if it only loops over each record and creates a new polygon based on some attribute based similarity... I've tried to do this (in a rather tedious way) by creating a nearest adjacency ID field (using Tools-->Geographic Analysis-->Adjacency... (Adjaceny IDs and distances)). And then, exporting two fields: polygon ID, & nearest neighbor ID to excel and using excel lookup functions to flag neighbors that are adjacent to more than one polygon. Then bringing back the non-shared neigbors, replacing them with their corresponding polygon IDs and then merging using the merge geogrpahy function. 'There should be a better way I hope... Thank you and regards, Rudy.
