[postgis-tickets] [PostGIS] #5352: ST_ClusterRelate(geom, de9impattern)

PostGIS trac at osgeo.org
Wed Mar 1 15:50:38 PST 2023


#5352: ST_ClusterRelate(geom, de9impattern)
--------------------------+---------------------------
  Reporter:  pramsey      |      Owner:  pramsey
      Type:  enhancement  |     Status:  assigned
  Priority:  medium       |  Milestone:  PostGIS 3.4.0
 Component:  postgis      |    Version:  master
Resolution:               |   Keywords:
--------------------------+---------------------------
Comment (by mdavis):

 This would be even more useful if the DE9IM pattern functionality was
 enhanced to allow more expressive patterns.  In particular, an "OR"
 capability would allow expressing relationships such as "polygons which
 share an edge or whose interiors intersect". (This is useful to support
 clustering/unioning polygons which are adjacent or overlapping, but not
 just touching at single points).

 A syntax supporting OR could be:

 {{{
 ****1*****|T********
 }}}

 While we're at it, it would be nice to allow a "dotted notation" for DE9IM
 patterns, for easier reading:
 {{{
 ***.*1**.***|T**.***.***
 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5352#comment:1>
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