[postgis-tickets] [PostGIS] #2162: ST_Intersects yields null where I see a clear intersection on quantum gis

PostGIS trac at osgeo.org
Sun Jan 20 19:50:41 PST 2013


#2162: ST_Intersects yields null where I see a clear intersection on quantum gis
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 Reporter:  sgottipamula  |       Owner:  pramsey      
     Type:  defect        |      Status:  new          
 Priority:  medium        |   Milestone:  PostGIS 1.5.9
Component:  postgis       |     Version:  1.5.X        
 Keywords:                |  
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Comment(by robe):

 In theory it shouldn't though we had a bug a while back that only showed
 if one record.  I think more likes is the ST_AsText use.  ST_AsText
 doesn't go past I think 14 significant decimals so is not a true
 representation of your point.

 Try outputting with geog::text  that will give the hex encoded binary
 representation which will present decimal truncation.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/2162#comment:6>
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