[postgis-tickets] [PostGIS] #4933: Slow topology population due to cost of finding face containing point.

PostGIS trac at osgeo.org
Mon Jun 28 08:07:15 PDT 2021


#4933: Slow topology population due to cost of finding face containing point.
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  Reporter:  strk         |      Owner:  strk
      Type:  enhancement  |     Status:  new
  Priority:  medium       |  Milestone:  PostGIS 3.2.0
 Component:  topology     |    Version:
Resolution:               |   Keywords:
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Comment (by strk):

 Unfortunately the current GetFaceByPoint function is *tested* to work
 against the broken topology built by topology.AddEdge and
 topology.AddFace, which is a combination of calls leaving the topology in
 a state with no correct edge linking. The new improved code relies instead
 on a valid topology in input.

 Note that ValidateTopology currently does not even report this kind of
 invalidity (see #3042)

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4933#comment:7>
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