[postgis-tickets] [PostGIS] #4738: ST_Union creates wrong result

PostGIS trac at osgeo.org
Fri Aug 28 03:41:34 PDT 2020


#4738: ST_Union creates wrong result
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  Reporter:  laopsahl  |      Owner:  pramsey
      Type:  defect    |     Status:  new
  Priority:  medium    |  Milestone:  PostGIS 3.1.0
 Component:  postgis   |    Version:  3.0.x
Resolution:            |   Keywords:
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Comment (by strk):

 This is most likely entering the precision reduction heuristic in GEOS and
 reducing precision too much. I guess using the new (GEOS-3.9) fixed-
 precision overlay would fix this case, it's to be tested.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4738#comment:3>
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