[postgis-devel] [PostGIS] #1789: ST_CreateTopoGeo, toTopoGeom: ERROR: Invalid edge (no two distinct vertices exist)

[PostGIS]

#1789: ST_CreateTopoGeo, toTopoGeom: ERROR:  Invalid edge (no two distinct
vertices exist)
----------------------+-----------------------------------------------------
 Reporter:  strk      |       Owner:  strk         
     Type:  defect    |      Status:  new          
 Priority:  medium    |   Milestone:  PostGIS 2.0.1
Component:  topology  |     Version:  2.0.x        
 Keywords:            |  
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Comment(by strk):

 Ok, problem is ST_Azimuth returns NULL for these input points:
 {{{
 010100000000000000004065C0041AD965BE5554C0
 010100000001000000004065C0041AD965BE5554C0
 }}}

 You can see the points are _not_ equal. ST_Distance returns
 2.8421709430404e-14.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1789#comment:8>
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