[postgis-tickets] [PostGIS] #4636: ST_Subdivide degrade data

[PostGIS]

#4636: ST_Subdivide degrade data
----------------------+---------------------------
  Reporter:  sirsosp  |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  high     |  Milestone:  PostGIS 2.5.4
 Component:  postgis  |    Version:  2.5.x
Resolution:           |   Keywords:
----------------------+---------------------------

Comment (by strk):

 I'm afraid ST_Subdivide uses intersection heavily, which is an
 algorithm that does not avoid creating new vertices, which in
 turn is prone to degradation/collapses.

 Ideally we'd have an algorithm to only split at vertices, such
 functionality is currently completely missing from PostGIS
 core (C implmentation).

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4636#comment:2>
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.