[postgis-devel] [PostGIS] #1271: ST_Line_Locate_Point inaccurate closest point

[PostGIS]

#1271: ST_Line_Locate_Point inaccurate closest point
---------------------+------------------------------------------------------
 Reporter:  strk     |       Owner:  strk         
     Type:  defect   |      Status:  assigned     
 Priority:  high     |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
---------------------+------------------------------------------------------

Comment(by strk):

 Oh.. wonder.
 =# SELECT 'line_locate_point_1',
 ST_line_locate_point('LINESTRING(709243.393033887
 163969.752725768,708943.240904444 163974.593889146,708675.634380651
 163981.832927298)', 'POINT(705780 15883)');
 NOTICE:  t:3, pa->npoints:3, end:(708943 163975)

 Indeed "end" is _not_ the last point, but the second-last.
 It's actually the endpoint of the first segment. I guess I should be using
 "seg" rather than "t"

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1271#comment:4>
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.