[postgis-devel] [PostGIS] #1735: ST_MakeValid: exception on geometry

[PostGIS]

#1735: ST_MakeValid: exception on geometry
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 Reporter:  aperi2007  |       Owner:  strk         
     Type:  defect     |      Status:  assigned     
 Priority:  medium     |   Milestone:  PostGIS 2.0.1
Component:  postgis    |     Version:  trunk        
 Keywords:             |  
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Comment(by strk):

 Trying to debug the polygonize issue I tried to model the situation I saw
 using intersection matrices into a new simpler input. This is it:

 [[Image(cannot_polygonize.png)]]

 In WKT, it is:
 {{{
 MULTILINESTRING((0 0, 4 0, 5 3, 4 6),(4 6, 6 6, 5 3, 6 0, 10 0, 5 10, 0
 0),(4 0, 6 0))
 }}}

 Unfortunately such input results in an EMPTY output from ST_Polygonize,
 which is confusing.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1735#comment:17>
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