[postgis-devel] [PostGIS] #788: Topology: ST_NewEdgesSplit don't work with more edges connected

PostGIS trac at osgeo.org
Tue Jan 18 12:22:25 PST 2011


#788: Topology: ST_NewEdgesSplit don't work with more edges connected
-----------------------+----------------------------------------------------
 Reporter:  aperi2007  |       Owner:  strk         
     Type:  defect     |      Status:  new          
 Priority:  medium     |   Milestone:  PostGIS 2.0.0
Component:  topology   |     Version:  trunk        
 Keywords:             |  
-----------------------+----------------------------------------------------

Comment(by aperi2007):

 Hi have more information.

 If instead of

 ----
 select
 topology.AddEdge('schema_topo',ST_GeomFromEWKT('SRID=3003;LINESTRING(1 4,
 4 4)'));

 select
 topology.AddEdge('schema_topo',ST_GeomFromEWKT('SRID=3003;LINESTRING(1 4,
 2 5, 3 5, 4 7)'));

 select topology.ST_newedgesSplit('schema_topo',1,
 ST_GeomFromEWKT('SRID=3003;POINT(3 5)'));
 ----

 I exchange the order of the first two addEdge

 ----
 select
 topology.AddEdge('schema_topo',ST_GeomFromEWKT('SRID=3003;LINESTRING(1 4,
 2 5, 3 5, 4 7)'));

 select
 topology.AddEdge('schema_topo',ST_GeomFromEWKT('SRID=3003;LINESTRING(1 4,
 4 4)'));

 select topology.ST_newedgesSplit('schema_topo',1,
 ST_GeomFromEWKT('SRID=3003;POINT(3 5)'));
 ----

 The work work !

 Perhaps it work only on the first edge of the table ?

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/788#comment:1>
PostGIS <http://trac.osgeo.org/postgis/>
The PostGIS Trac is used for bug, enhancement & task tracking, a user and developer wiki, and a view into the subversion code repository of PostGIS project.


More information about the postgis-devel mailing list