[postgis-tickets] [PostGIS] #2782: st_lineMerge not merging

PostGIS trac at osgeo.org
Wed Jun 25 09:57:38 PDT 2014


#2782: st_lineMerge not merging
---------------------+------------------------------------------------------
 Reporter:  mjurce   |       Owner:  pramsey
     Type:  defect   |      Status:  new    
 Priority:  medium   |   Milestone:         
Component:  postgis  |     Version:  2.0.x  
 Keywords:           |  
---------------------+------------------------------------------------------

Comment(by mjurce):

 In this way merges.

 select st_asText(st_makeLine(a.geom))
 from ( select (ST_DumpPoints(st_curvetoline(
 st_GeomFromText('MULTICURVE(CIRCULARSTRING(708237.133 153748.878,
 708240.630 153778.206,708246.992 153807.048),CIRCULARSTRING(708246.992
 153807.048,708246.308 153805.266,708245.236 153803.688),
 CIRCULARSTRING(708245.236 153803.688,708242.097 153802.592,708239.161
 153804.152),
 CIRCULARSTRING(708239.161 153804.152,708238.274 153806.923,708238.402
 153809.829),
 CIRCULARSTRING(708238.402 153809.829,708232.204 153779.826,708228.571
 153749.406),
 (708228.571 153749.406,708237.133 153748.878))')) )) .geom ) as a


 Should linemerge also work.
 Any drawback usning dumPoints insetead of linemerge?

 Thanks.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2782#comment:1>
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