[postgis-tickets] [PostGIS] #4896: Allow ST_Boundary() to return start/end point of closed LineString

[PostGIS]

#4896: Allow ST_Boundary() to return start/end point of closed LineString
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 Reporter:  strk         |      Owner:  pramsey
     Type:  enhancement  |     Status:  new
 Priority:  medium       |  Milestone:  PostGIS 3.2.0
Component:  postgis      |    Version:
 Keywords:               |
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 At the moment ST_Boundary() returns an EMPTY geometry when called against
 closed linestrings. This makes sense from a topological point of view, but
 in some cases you may want to get an official startpoint and it's
 currently annoyingly hard to get that, especially for multilines.

 I think we do support some kind of BoundaryNodeRule for other operations,
 and then I guess it would be nice to have for ST_Boundary as well.

 What do you think DrJTS ?

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4896>
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