[postgis-tickets] [PostGIS] #5390: TopologyException: side location conflict on ST_IsValid-geometry

[PostGIS]

#5390: TopologyException: side location conflict on ST_IsValid-geometry
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  Reporter:  tjay     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS GEOS
 Component:  postgis  |    Version:  3.1.x
Resolution:           |   Keywords:
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Comment (by mdavis):

 GEOS 3.12 (the next release) contains a fix for this problem.

 A party-effective workaround for this is to compute the intersects on the
 boundary (`ST_Boundary`) of each geometry instead.   This works as long as
 one geometry is not wholly contained in the other.  To handle that case
 (if needed) you could also test for intersection of one point of each
 geometry against the other.

 {{{
 SELECT ST_Intersects(
   ST_Boundary('POLYGON ((335645.7810000004 5677846.65, 335648.6579999998
 5677845.801999999, 335650.8630842535 5677845.143617179, 335650.77673334075
 5677844.7250704905, 335642.90299999993 5677847.498, 335645.7810000004
 5677846.65))'),
   ST_Boundary('POLYGON ((335642.903 5677847.498, 335642.894 5677847.459,
 335645.92 5677846.69, 335647.378 5677852.523, 335644.403 5677853.285,
 335644.374 5677853.293, 335642.903 5677847.498))')
 );
 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5390#comment:1>
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