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  1. MariaDB Server
  2. MDEV-7514

GIS: PointOnSurface returns NULL instead of the point

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Fixed
    • N/A
    • 10.1.4
    • GIS

    Description

      10.1 tree

      		 
      MariaDB [test]> SELECT ST_AsText(ST_PointOnSurface(ST_PolyFromText('POLYGON((-70.916 42.1002,-70.9468 42.0946,-70.9754 42.0875,-70.9749 42.0879,-70.9759 42.0897,-70.916 42.1002))')));
      		 
      +-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      | ST_AsText(ST_PointOnSurface(ST_PolyFromText('POLYGON((-70.916 42.1002,-70.9468 42.0946,-70.9754 42.0875,-70.9749 42.0879,-70.9759 42.0897,-70.916 42.1002))'))) |
      		 
      +-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      | NULL                                                                                                                                                            |
      		 
      +-----------------------------------------------------------------------------------------------------------------------------------------------------------------+
      		 
      1 row in set (0.00 sec)

      PostGIS

      		 
      pgis=# SELECT ST_AsText(ST_PointOnSurface(ST_PolyFromText('POLYGON((-70.916 42.1002,-70.9468 42.0946,-70.9754 42.0875,-70.9749 42.0879,-70.9759 42.0897,-70.916 42.1002))')));
      		 
                   st_astext             
      -----------------------------------
      		 
       POINT(-70.9510231824279 42.09385)
      		 
      (1 row)

      The shape is rather simple (see the picture).

      Attachments

        Issue Links

          relates to

          Task - A task that needs to be done. MDEV-7509 Testing for GIS extensions

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35766 ST_PointOnSurface returns NULL with Polygon in some case

          • Major - Major loss of function.
          • Open

          Activity

            People

              holyfoot Alexey Botchkov
              elenst Elena Stepanova
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              Dates

                Created:
                Updated:
                Resolved:

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