[postgis-tickets] [PostGIS] #4395: ST_ClosestPoint: return 3D point if passed in 3D point

[PostGIS]

#4395: ST_ClosestPoint: return 3D point if passed in 3D point
-------------------------+---------------------------
 Reporter:  komzpa       |      Owner:  komzpa
     Type:  enhancement  |     Status:  assigned
 Priority:  medium       |  Milestone:  PostGIS 3.0.0
Component:  postgis      |    Version:  trunk
 Keywords:               |
-------------------------+---------------------------
 We have lines in X,Y,Z that have Z storing timestamps of traveling through
 points.

 ST_ClosestPoint drops Z instead of interpolating it. ST_3DClosestPoint
 measures distance also across the fake time which is not what we would
 need.

 ST_ClosestPoint should return 3D points for 3D inputs.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/4395>
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.