+11
I have parcel boundaries, And i need to create outer boundary for parcels using some attribute name. In my group there are 4 types of attributes will come (attribute value a,b,c, and d) so i need to create 4 outer boundaries.NO OVERLAPS on outer boundaries. and are gaps between parcels and sometimes parcels are far from each other. Pls anyone can help me? i tried hull , but hull overlaps some cases.
+11How about the Aggregator with a Group By? Or does your outer polygon have to be contiguous?
+15create hull grouped by attribute. You get 4 hulls, a,b,c,d
Clipp each hull by the other parcell area areas. So clip Hull a by parcells b,c,d (u can use an "IN" test).
Then you need to clip the resulting area by eachother. Using for instance a AreaOnArea overlayer and test for overlaps = 0
(of course you might end up with more then 4 areas depending on the complexity of the Hull shape. Then a way to avoid or minimize that is to do a buffer on the hulls prior to the aforementioned process.)
+11
yes
