[postgis-tickets] [PostGIS] #5006: ST_Transform: Support PROJ pipelines

[PostGIS]

#5006: ST_Transform: Support PROJ pipelines
--------------------------+-----------------------------
  Reporter:  cdestigter   |      Owner:  strk
      Type:  enhancement  |     Status:  assigned
  Priority:  medium       |  Milestone:  PostGIS Fund Me
 Component:  liblwgeom    |    Version:  master
Resolution:               |   Keywords:  proj
--------------------------+-----------------------------

Comment (by strk):

 My idea of an integer ID was NOT to query spatial_ref_sys but a different,
 new table. Sometihng like spatial_ref_sys_transforms or similar. Such
 table could have a column expressing source SRID, a column expressiong
 target SRID and a proj4 string expressing the actual
 transformation/pipeline.
 The key to access it could even not be an integer but a descriptive name.

 I guess users could build such table theirselves and query it dynamically
 with their queries, but if we had an official table maybe we could do some
 neat things like verifying the input geometry has a valid source SRID for
 that transformation... (just an idea).

 In any case the free-form signature would still be the workhorse so still
 the best first step.

-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5006#comment:5>
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.