[postgis-tickets] [PostGIS] #2858: ST_MMin and ST_MMax functions for geometry (was: ST_MMin and ST_MMax functions)

[PostGIS]

#2858: ST_MMin and ST_MMax functions for geometry
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 Reporter:  mwtoews      |       Owner:  pramsey       
     Type:  enhancement  |      Status:  new           
 Priority:  medium       |   Milestone:  PostGIS Future
Component:  postgis      |     Version:  trunk         
 Keywords:               |  
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Changes (by robe):

  * milestone:  => PostGIS Future


Comment:

 strk,

 We already have a ST_ZMin, ST_ZMax for box3d.  Does box3d even have a slot
 for M?  pramsey are you saying it does?

 Just in case it's not obvious: NONE of these functions we have are defined
 for geometry/geography and are ONLY defined for box3d. Even the X one
 http://postgis.net/docs/manual-dev/ST_XMin.html. We chucked the box2d
 variants a long time ago.

  They work for geometry cause we have an implicit cast to box3d for
 geometry.  We have no such thing for geography so these functions have
 NEVER (not even ST_XMin) worked for geography without casting to geometry
 first.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/2858#comment:3>
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