I have some spatial data (MapInfo files) that contains self-intersecting polygons. These cause problems in my processing, in particular I can't generate geometric unions in PostGIS. Is there an easy way to resolve the issue? I can deal with multi-polygons if that should be necessary.
How do I clean up self-intersecting polygons in a spatial database?
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I figured it out myself: an
st_buffer(wkb_geometry,0)does the trick, at least on my sample data.