[postgis-devel] [PostGIS] #1314: Improve robustness of linear referencing functions

[PostGIS]

#1314: Improve robustness of linear referencing functions
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 Reporter:  strk         |       Owner:  pramsey       
     Type:  enhancement  |      Status:  new           
 Priority:  medium       |   Milestone:  PostGIS Future
Component:  postgis      |     Version:  trunk         
 Keywords:               |  
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 Using a location in the range 0..1 was not a very good idea. It happens
 easily that getting the location of an existing vertex and using that
 location to interpolate a point doesn't yeld the original vertex. See
 #1311 for such a case.

 Using a full distance would be more robust.
 Even more robust would be using a segment number + a distance from
 segment's startpoint.

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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1314>
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