[postgis-devel] [PostGIS] #1902: [raster] GDAL Surfer export creates files with minY and maxY swapped in header.

[PostGIS]

#1902: [raster] GDAL Surfer export creates files with minY and maxY swapped in
header.
------------------------------+---------------------------------------------
 Reporter:  febi              |       Owner:  pracine      
     Type:  defect            |      Status:  new          
 Priority:  medium            |   Milestone:  PostGIS 2.0.2
Component:  raster            |     Version:  2.0.x        
 Keywords:  raster GSBG GSAG  |  
------------------------------+---------------------------------------------

Comment(by dustymugs):

 PostGIS Raster (and most other raster tools I've used) follows the
 definitions of the World File...

 [http://en.wikipedia.org/wiki/World_file]

 So, top to bottom is expected to be negative (negative Y scale) and left
 to right is expected to be positive (positive X scale).  I'm guessing that
 your raster's Y scale is positive and the upper-left corner of the raster
 is really the raster's lower-left corner.  So, you need to swap the Y
 coordinates of the lower-left and upper-left and make the Y scale
 negative.  I think that's right...

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1902#comment:6>
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.