Changes between Version 17 and Version 18 of WKTRaster/SpecificationWorking03

Timestamp:

Feb 23, 2010, 11:08:47 AM (14 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking03

@@ -122 +122 @@
   SELECT ST_MapAlgebra(rast1, rast2, mathExpr) FROM mytable
 
- '''Open Question:''' Should ST_MapAlgebra resample rasters internally, or produce a raster that can be processed by ST_Resample? If so, variant 1 and variant 3 can be removed, and all ST_MapAlgebra results can be processed through ST_Resample, like:
+ '''Open Question:''' 
+      DZ: Should ST_MapAlgebra resample rasters internally, or produce a raster that can be processed by ST_Resample? If so, variant 1 and variant 3 can be removed, and all ST_MapAlgebra results can be processed through ST_Resample, like:
   ST_Resample(ST_MapAlgebra(raster, [raster,…] 'mathematical expression', integer), originx, originy, pixelsizex, pixelsizey)[[BR]]
   ST_Resample(ST_MapAlgebra(raster, [raster,…] 'mathematical expression', integer), rastergrid)
+        PR: I think this would greatly contribute to simplify the API.
 
 '''ST_Clip(raster|geometry,geometry) -> same type as first argument'''[[BR]]