[postgis-devel] [PostGIS] #1765: Incorrect ST_Extent example in README_Raster.txt

PostGIS trac at osgeo.org
Tue Apr 10 05:37:12 PDT 2012

#1765: Incorrect ST_Extent example in README_Raster.txt
 Reporter:  mloskot        |       Owner:  robe          
     Type:  defect         |      Status:  new           
 Priority:  medium         |   Milestone:  PostGIS Future
Component:  documentation  |     Version:  2.0.x         
 Keywords:  extent         |  
 Using PostgreSQL 9.1 x86 on Windows 7

 SELECT postgis_raster_lib_build_date(), postgis_raster_lib_version();

 "2012-04-03 23:11:11";"2.0.0 r9605"

 [http://postgis.org/download/windows/ README_Raster.txt] includes the
 following SQL:

 SELECT ST_Extent(rast) FROM rt_test

 which obviously leads to

 ERROR:  function st_extent(raster) does not exist
 LINE 1: SELECT ST_Extent(rast) FROM rt_test
 HINT:  No function matches the given name and argument types. You might
 need to add explicit type casts.

 Apparently, correct command should read

 SELECT ST_Extent(rast::geometry) FROM rt_test

Ticket URL: <http://trac.osgeo.org/postgis/ticket/1765>
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