how to make clusters from small polygons with constraint of boundary touching?

waqarahmad

I want to make some clusters from a bunch of small polygons with the constraint that each basic unit (polygon) in the resultant cluster must share a portion of its boundary with at least one other basic unit (polygon) in the same cluster. This is becuase of the reason that i want the resultant clusters contagious.

DarrenWiens2

You can pull out polygons intersecting at least one other polygon using the following script:

>>> polys = []
... outPolys = []
... with arcpy.da.SearchCursor("YOUR_POLYGON_LAYER_HERE","SHAPE@") as cursor:
...    for row in cursor:
...        polys.append(row[0])
... for i in range(len(polys)):
...    overlap = 0
...    for j in range(len(polys)):
...        if polys.distanceTo(polys) == 0:
...            overlap = overlap + 1
...    if overlap > 1:
...        outPolys.append(polys)       
... arcpy.CopyFeatures_management(outPolys,'in_memory\polys')