[PostGIS] #3279: ST_OffsetCurve return wrong result

PostGIS trac at osgeo.org
Thu Apr 3 13:29:35 PDT 2025


#3279: ST_OffsetCurve return wrong result
----------------------+----------------------------
  Reporter:  MaxS     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  low      |  Milestone:  PostGIS GEOS
 Component:  postgis  |    Version:  2.1.x
Resolution:           |   Keywords:  st_offsetcurve
----------------------+----------------------------
Comment (by jratike80):

 Still returns a multilinestring with PostGIS 3.4. I do not know if that is
 serious and worth keeping this 10 years old ticket open.


 {{{
 select st_astext(st_offsetcurve(
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geometry,
       -0.002,
       'join=mitre'))
 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3279#comment:3>
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