[postgis-tickets] [PostGIS] #1292: ST_SnapToGrid returns a value out of range

PostGIS trac at osgeo.org
Tue Feb 19 06:24:43 PST 2013


#1292: ST_SnapToGrid returns a value out of range
----------------------------+-----------------------------------------------
  Reporter:  realityexists  |       Owner:  pramsey      
      Type:  patch          |      Status:  reopened     
  Priority:  medium         |   Milestone:  PostGIS 2.0.3
 Component:  postgis        |     Version:  trunk        
Resolution:                 |    Keywords:               
----------------------------+-----------------------------------------------

Comment(by realityexists):

 It checks that the points at 180 longitude remain at 180. Without this
 patch they become -180 instead. It also checks multi-geometries and a
 polygon with multiple rings, which have failed in the past (at r8990).
 ST_SnapToGrid is what causes the coordinates to be "just over" 180, so
 it's essential to the test.

 The NOTICE is gone from another test because it no longer occurs. Looking
 at that test, I think it never should have occurred and was just allowed
 because it didn't seem to cause any problems, but maybe someone more
 familiar with it can comment.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1292#comment:14>
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