Hi, I have PostGIS table with multipolygon geometry column of ~2000 features with valid geometries. Most are single polygons. These were originally in 900914 projection.
I tried to re-project to 4326, first with org2ogr then with PostGIS's ST_Transform() function. In both cases I get results with couple of invalid geometries in a manner of: segment [#] of ring [#] of polygon [#] intersects segment [#] of ring [#] of polygon [#] at [x], [y] reported by QGIS "Check geometry validy" function, or same as a result from PostGIS's ST_IsValid() function. Interestingly table reprojected with ogr2ogr shows errors on different features then errors generated by PostGIS's ST_Transform() function. I wonder if there are some steps I can take before re-projecting or afterward, that will produce valid transformation, without need of correcting erroneous geometries by hand after re-projecting data? Thanks
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