[postgis-devel] [PostGIS] #891: Allow 2.5D topologies

[PostGIS]

#891: Allow 2.5D topologies
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 Reporter:  strk     |       Owner:  strk         
     Type:  task     |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
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 Currently, only strictly 2d nodes and edges are allowed in topologies.
 Althought a Z component would not have a topological role it may still be
 useful to allow expressing a per-vertex Z.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/891>
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