[postgis-tickets] [PostGIS] #3510: ST_RemoveColinearPoints

[PostGIS]

#3510: ST_RemoveColinearPoints
--------------------------+---------------------------
  Reporter:  robe         |      Owner:  pramsey
      Type:  enhancement  |     Status:  new
  Priority:  medium       |  Milestone:  PostGIS 2.3.0
 Component:  postgis      |    Version:  trunk
Resolution:               |   Keywords:
--------------------------+---------------------------

Comment (by strk):

 I don't see how implicit closure helps with the case.
 It's not the duplicated start-endpoint that Regina wants to get rid
 of, but the collinear triplet (PN-1),PN=P0,P1.

 The problem is we don't detect collinearity because the central point
 is the end of the subject line, and we don't follow it "to the other
 side" because we don't intend to ever drop the start/endpoint from
 a ring in any case.

 Is the situation correctly explained, Regina ?

--
Ticket URL: <http://trac.osgeo.org/postgis/ticket/3510#comment:8>
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.