Hi,A friend of mine has a dirty input data set with lots of overlapping geometries (within the same layer) and asked me if there is a tool within QGIS to automatically remove the overlaps and assign the overlapping area to the neighbor polygon with the largest area.
The solution was surprisingly hard to find, although I am pretty sure there are multiple combinations of algorithms that would solve the problem. Here is the solution I came up with: https://github.com/qgis-ch/overlap_removal/tree/main [1]- perhaps you have better ideas - more elegant solutions?
Wouldn't it be great if QGIS had a processing tool to solve this overlap cleaning within the same layer "out of the box" without having to use a graphical model or a more or less complicated sequence of algorithms in the processing toolbox? Apparently, ArcGIS has such a tool ...
Saga and GRASS also might have such tools - but I couldn't get the SAGA based QGIS plugin "Dissect and dissolve overlaps" (https://plugins.qgis.org/plugins/dissect_dissolve_overlaps).
The same problem exists for automatically filling small gaps in the polygon data set ...
Andreas Links: ------ [1] https://github.com/qgis-ch/overlap_removal/tree/main
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