Changes between Version 235 and Version 236 of WKTRaster/SpecificationWorking03

Timestamp:

Aug 27, 2012, 11:27:35 AM (12 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking03

@@ -136 +136 @@
   * ST_GeomToRaster('schemaname', 'tablename', 'geomolumnname', 'METHOD') (Category 2) - A generalization of ST_FirstGeomValue4ma() described above but accepting more methods of value extraction, depending on the type of coverage we want to extract from. This is very much like doing an intersection (actually more like an "identify" overlay operation) between a raster and a vector coverage.
 
-  This function can further be generalised by adding parameters to define a buffer area around the pixel centroid or the pixel boundary. This would provide a category 4 type of function.
+  This function can further be generalised by adding parameters to define a buffer area around the pixel centroid or the pixel boundary. This would provide a category 4 type of function. (e.g. ST_Density())
 
  The METHOD could be:
@@ -150 +150 @@
 ----
 == '''Objective FV.28 - Add some function interpolating a raster from a geometry layer''' ==
+
+ * ST_Interpolate('schemaname', 'tablename', 'geomolumnname', 'METHOD') - Method could be 'NEAREST_NEIGHBOR', 'IDW', 'KRIGING', 'NATURAL_NEIGHBOR', 'SPLINE', 'REG_SPLINE_WITH_TENSION', etc...
 
 ----
@@ -256 +258 @@
 '''ST_mem_size(raster|geometry) -> integer'''[[BR]]
 '''ST_isvalid(raster|geometry) -> boolean'''
- 
-
-----
-== '''Objective FV.10 - Being able to derive a raster layer from vector layer.''' ==
- 
-
-'''ST_Distance(points, pixelsize, method) -> raster'''[[BR]]
-'''ST_CostDistance(points, pixelsize, method) -> raster'''[[BR]]
-'''ST_Interpolate(points, pixelsize, method) -> raster'''
-
-Preliminary work has been done on this as a GSoC project. See [http://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools the GSoC 2012 project].
-
-
- 
+  
 ----
 == '''Objective FV.12 - Being able to use all the other topological operators''' ==