[postgis-tickets] [PostGIS] #3045: &&& operator confuses dimensions

PostGIS trac at osgeo.org
Fri Feb 20 01:39:59 PST 2015


#3045: &&& operator confuses dimensions
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 Reporter:  strk     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.7
Component:  postgis  |     Version:  2.0.x        
 Keywords:           |  
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Comment(by strk):

 So this seems to be an harder problem than it looked.
 That is, if we really want to assume "missing" dimension are "infinite",
 as suggested in
 http://lists.osgeo.org/pipermail/postgis-devel/2015-February/024759.html
 Then we need to "pad" the Z for a ZM point with an explicit infinite range
 (-inf,+inf).

 It sounds like something that would need to be done in
 gserialized_datum_get_gidx_p which would then construct 4D boxes for 3DM
 geometries (with a padding). That's unless we have ZM semantic in GIDX
 which I think we don't ?

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/3045#comment:4>
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