I have a layer that has nested polygons in them. I want to aggregate the polygons. I do this using the Union function.
I use the "No Gaps" option when I perform the union.
However, when I overlay my unioned layer on top of the original, I can see small gaps in the polygon.
We also thought that doing a topology would work better than the union. Except when we overlay the polygon count is different.
What causes these gaps, and how do I remove them?