I am new to qgis and appreciate any help/advice. I have a polygon shp file and some of my polygons are within another polygon (again:they are on the same layer). So I want to split the big polygon into smaller ones to avoid this overlapping. The shape of the new, small polygons are not important, the key is to eliminate overlapping. I have used python before, but not really in qgis, so open for exploring. My idea: I found "within" in the field calculator, can iterate over the same geometry twice to detect this situation. But after that I could not find anything useful to split automatically the big polygon. Any help/recommendation is appreciated. Thank you so much in advance.
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