[postgis-tickets] [PostGIS] #5238: ST_Area() does not always follow the winding order of coordinates in a Geography

PostGIS trac at osgeo.org
Tue Sep 13 13:36:23 PDT 2022


#5238: ST_Area() does not always follow the winding order of coordinates in a
Geography
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  Reporter:  eldang   |      Owner:  pramsey
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 3.2.4
 Component:  postgis  |    Version:  3.2.x
Resolution:  wontfix  |   Keywords:
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Comment (by eldang):

 Replying to [comment:2 robe]:
 > This is by design.  geography doesn't care about winding order and
 always computes based on short-test edge. It does not support correctly
 calculate measures of  geometries larger than a half-hemisphere  as a
 result.
 >
 > This is written in the FAQ -
 https://postgis.net/docs/using_postgis_dbmanagement.html#idm1655

 Thank you, and I'm sorry I hadn't realised that.
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5238#comment:3>
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