Wednesday, 5 April 2017

Filling in Donut Polygons using ArcGIS for Desktop?


I have a set of polygons that represent bodies of water.


In the same feature are polygons that are the islands in the body of water. So for a given lake, there are smaller polygons within that represent the islands in the same feature. However, the actual water polygon itself for that lake there are "holes" where the islands exist.


So for a lake with one island in the middle, the water polygon would look like a donut.


Now I want to create a layer of water polygons with the holes filled in, so that when I want to view all the lakes in a map, I can see all the water polygons without holes in them.


Note: An island may contain bodies of water within itself. There may even be nested bodies of water within an island, which is part of a body of water that is part of another island. Kind of like an inception of water/islands :-).


How would I be able to do this in ArcGIS for Desktop?





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