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.
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Maptitude/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/Maptitude/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:[EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
