[postgis-tickets] [PostGIS] #3464: ERROR: lwt_ChangeEdgeGeom could not construct face X, on the left of edge Y

PostGIS trac at osgeo.org
Wed Feb 24 03:14:01 PST 2016


#3464: ERROR: lwt_ChangeEdgeGeom could not construct face X, on the left of edge Y
-----------------------+----------------------------
  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  medium    |  Milestone:  PostGIS Future
 Component:  topology  |    Version:  trunk
Resolution:            |   Keywords:  robustness
-----------------------+----------------------------

Comment (by strk):

 The responsibiliy of the missing split is ST_Difference.
 Basically this operation:
 {{{
 SELECT ST_Difference(
 '010200000004000000E5398D8F9D5C2341520162CA656C52416280868FA75C2341682866CA5D6C52419B76618FEB5C2341A6666A4A556C524185685E0FF15C234156E86A4A546C5241'
 ::geometry,
 '0107000000020000000102000000030000004A7B838FA75C2341D50968CA5D6C5241F6285C8FEB5C234143AD694A556C5241A2B0DFEB145D2341D75DC9214E6C52410102000000030000004A7B838FA75C2341D50968CA5D6C5241F6285C8FEB5C23411FF46C4A556C5241A2B0DFEB145D2341D75DC9214E6C5241'
 ::geometry);
 }}}

 That is the difference between the input line and the collection of
 existing edges.

--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/3464#comment:9>
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