[postgis-devel] [PostGIS] #478: [wktraster] There seems to be an offset in ST_Envelope or ST_Box2D

[PostGIS]

#478: [wktraster] There seems to be an offset in ST_Envelope or ST_Box2D
------------------------+---------------------------------------------------
  Reporter:  robe       |       Owner:  pracine        
      Type:  defect     |      Status:  new            
  Priority:  medium     |   Milestone:  WKTRaster 0.1.6
 Component:  wktraster  |     Version:  trunk          
Resolution:             |    Keywords:                 
------------------------+---------------------------------------------------
Comment (by robe):

 I think the problem here might be that the PixelYSize is being set wrong.
 It should be negative instead of positive.

 Remember I had posted an invalid bug #489 about why I'm getting negative
 pixel y sizes, and Mike Toews corrected me and said they usually are
 negative.

 Well for the gif and png samples I loaded, I noticed the PixelYSize was
 coming in as 1 so I changed it to -1 and that made everything line up
 right.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/478#comment:14>
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.