Changes between Version 49 and Version 50 of WKTRaster/SpecificationWorking02

Timestamp:

03/10/11 13:50:45 (14 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking02

@@ -72 +72 @@
  '''Implementation details'''
 
- Only the first variant should be implemented in C. Others are PL/pgSQL variants. The C implementation should follow the PL/pgSQL script of the one raster version of ST_MapAlgebra implemented at the top of http://trac.osgeo.org/postgis/browser/spike/wktraster/scripts/plpgsql/st_mapalgebra.sql
+ Only the first variant should be implemented in C. Others are PL/pgSQL variants. The C implementation should follow the PL/pgSQL script of the one raster version of ST_MapAlgebra implemented at the top of http://trac.osgeo.org/postgis/browser/trunk/raster/scripts/plpgsql/st_mapalgebra.sql
 
  Optimizations should be implemented in many situations:
@@ -111 +111 @@
  '''Implementation Details'''
 
- Only the first variant should be implemented in C. The second one is a PL/pgSQL variants. The C implementation should follow the PL/pgSQL version implemented in http://trac.osgeo.org/postgis/browser/spike/wktraster/scripts/plpgsql/st_mapalgebra.sql
+ Only the first variant should be implemented in C. The second one is a PL/pgSQL variants. The C implementation should follow the PL/pgSQL version implemented in http://trac.osgeo.org/postgis/browser/trunk/raster/scripts/plpgsql/st_mapalgebra.sql
 
  It is not clear if this PL/pgSQL implementation works when raster are rotated. To verify.
 
  
-'''ST_MapAlgebra'''
-
- TBD
+'''ST_MapAlgebra on two rasters'''
+
+ Specifications of ST_MapAlgebra on two rasters are still in progress as a new optimised version, filling large areas of same value more quickly, is planned. See http://trac.osgeo.org/postgis/browser/trunk/raster/scripts/plpgsql/st_mapalgebra_optimized.sql
 
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