[postgis-tickets] [PostGIS] #3638: ST_ConcaveHull doesn't always cover original

[PostGIS]

#3638: ST_ConcaveHull doesn't always cover original
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  Reporter:  robe     |      Owner:  robe
      Type:  defect   |     Status:  closed
  Priority:  medium   |  Milestone:  PostGIS 2.5.0
 Component:  postgis  |    Version:  2.2.x
Resolution:  fixed    |   Keywords:
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Comment (by robe):

 In [changeset:"16659" 16659]:
 {{{
 #!CommitTicketReference repository="" revision="16659"
 put back old sfcgal test (except use \i, and have the query be what was in
 sfcgal one), the sfcgal one was different
 Closes #4131
 Revise ST_ConcaveHull to use ST_UnaryUnion(ST_Collect..) (cause I know
 sfcgal doesn't replace with it's own implementation / a bit of a cheat)
 Take out some ST_Union calls I think are over compensating.
 References #3638
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3638#comment:4>
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