[postgis-devel] [PostGIS] #597: [raster] ST_Clip

[PostGIS]

#597: [raster] ST_Clip
----------------------------+-----------------------------------------------
 Reporter:  pracine         |       Owner:  dustymugs    
     Type:  task            |      Status:  assigned     
 Priority:  blocker         |   Milestone:  PostGIS 2.0.0
Component:  postgis raster  |     Version:  trunk        
 Keywords:                  |  
----------------------------+-----------------------------------------------
Changes (by dustymugs):

  * status:  new => assigned


Comment:

 From the looks of it, Pierre's ST_Clip has the following signatures.

 {{{
 1. ST_Clip(
         rast raster, band int,
         geom geometry,
         nodata float8 DEFAULT null,
         trimraster boolean DEFAULT false
 )
 }}}

 {{{
 2. ST_Clip(
         rast raster,
         geom geometry,
         nodata float8 DEFAULT null,
         trimraster boolean DEFAULT false
 )
 }}}

 {{{
 3. ST_Clip(
         rast raster, band int,
         geom geometry,
         trimraster boolean
 )
 }}}

 {{{
 4. ST_Clip(
         rast raster,
         geom geometry,
         trimraster boolean
 )
 }}}

 I'm wondering if the "nodata" parameter could be dropped as I would
 consider ST_Clip a pure extent constraining function with no data
 manipulation.  Also, I'd like to see trimraster default to TRUE as the
 primary purpose of ST_Clip is to cut up the raster to only the area(s) of
 interest.  Will need to ask postgis-devel as there are one or two users of
 ST_Clip.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/597#comment:6>
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