[postgis-tickets] [PostGIS] #2645: ST_LineInterpolatePoint incorrect output for vertical line

[PostGIS]

#2645: ST_LineInterpolatePoint incorrect output for vertical line
------------------------------+---------------------------------------------
 Reporter:  bencaradocdavies  |       Owner:  pramsey      
     Type:  defect            |      Status:  new          
 Priority:  high              |   Milestone:  PostGIS 2.1.2
Component:  postgis           |     Version:  2.1.x        
 Keywords:                    |  
------------------------------+---------------------------------------------

Comment(by bencaradocdavies):

 Lines aligned with the X or Y axis also appear to be interpolated
 correctly:
 {{{
 $ select st_asewkt(st_lineinterpolatepoint(st_geomfromewkt('LINESTRING(0 0
 0, 1 0 0)'), 0.5));
    st_asewkt
 ----------------
  POINT(0.5 0 0)
 (1 row)

 $ select st_asewkt(st_lineinterpolatepoint(st_geomfromewkt('LINESTRING(0 0
 0, 0 1 0)'), 0.5));
    st_asewkt
 ----------------
  POINT(0 0.5 0)
 (1 row)
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2645#comment:1>
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