[postgis-devel] [PostGIS] #1176: [raster] Two raster ST_Intersects

PostGIS trac at osgeo.org
Fri Sep 9 21:52:53 PDT 2011


#1176: [raster] Two raster ST_Intersects
----------------------------+-----------------------------------------------
 Reporter:  dustymugs       |       Owner:  dustymugs    
     Type:  enhancement     |      Status:  assigned     
 Priority:  medium          |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
----------------------------+-----------------------------------------------

Comment(by bnordgren):

 I'm somewhat at a loss to understand why the band matters (other than to
 compare with the nodata value, of course). So if the user elects to
 "exclude_nodata_valueA", then the convex hull of the rastA is the shape
 which needs to be tested for intersection with rastB, right? Essentially
 what I'm getting at is that the only reason to supply a band index at all
 is to tell the function which band contains the nodata value. If you want
 to ignore the nodata value, I think you can omit the band index entirely.

 I think this simplifies the above list to !#5, !#2 and

 ST_Intersects(raster rastA, raster rastB) -> boolean

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1176#comment:4>
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