[postgis-tickets] [PostGIS] #2605: armel: _ST_Covers() returns true for point in hole

PostGIS trac at osgeo.org
Tue Jan 7 13:38:53 PST 2014


#2605: armel: _ST_Covers() returns true for point in hole
---------------------+------------------------------------------------------
 Reporter:  mwanner  |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.1.2
Component:  postgis  |     Version:  2.1.x        
 Keywords:           |  
---------------------+------------------------------------------------------
 I tracked down an issue in the topology test suite (test addpolygon) to
 the following (on ARM, little-endian):

 {{{
 test=# SELECT _ST_Covers('POLYGON((9 28, 16 29, 16 23, 10 23, 9 28),
                                   (15 25, 13 27, 11 24, 15
 25))'::geometry,
                          'POINT(13 25)'::geometry);
  _st_covers
 ------------
  t
 (1 row)
 }}}

 The point in question in excluded by the hole, so _ST_Covers() should
 return false. It works properly if you use a small polygon, instead:

 {{{
 test=# SELECT _ST_Covers('POLYGON((9 28, 16 29, 16 23, 10 23, 9 28),
                                   (15 25, 13 27, 11 24, 15
 25))'::geometry,
                          'POLYGON((13 25, 13.1 25, 13 25.1, 13
 25))'::geometry);
  _st_covers
 ------------
  f
 (1 row)
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2605>
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