[postgis-devel] [PostGIS] #1695: ST_SnapToGrid returns non-typed empties

[PostGIS]

#1695: ST_SnapToGrid returns non-typed empties
---------------------+------------------------------------------------------
 Reporter:  strk     |       Owner:  pramsey      
     Type:  defect   |      Status:  new          
 Priority:  medium   |   Milestone:  PostGIS 2.0.0
Component:  postgis  |     Version:  trunk        
 Keywords:           |  
---------------------+------------------------------------------------------
 {{{
 strk=# select ST_AsEWKT(ST_SnapToGrid('MULTIPOLYGON(((0 0, 10 0, 10 10, 0
 10, 0 0)))'::geometry, 20));
         st_asewkt
 --------------------------
  GEOMETRYCOLLECTION EMPTY
 (1 row)
 }}}

 Compare with ST_Simplify, which supports empties:

 {{{
 strk=# select ST_AsEWKT(ST_Simplify('POLYGON((0 0, 10 0, 10 10, 0 10, 0
 0))'::geometry, 20));
    st_asewkt
 ---------------
  POLYGON EMPTY
 (1 row)
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1695>
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