I have a non-overlapping dataset of polygons. I change some attribute values around and dissolve on one of those attributes. Now my dataset has overlaps.
Dissolver is on automatic accuracy. Changing this value manually did not change it for the better.
The resulting overlap is small (approx. 1mm width), the dataset is only in the scale of several 100 meters though. So this is not some sliver in the nanometer range.
How does this even happen, and how can I avoid it?
