Changes between Version 240 and Version 241 of WKTRaster/SpecificationWorking03

Timestamp:

Sep 18, 2012, 7:16:45 AM (12 years ago)

Author:

pracine

Comment:

—

WKTRaster/SpecificationWorking03

@@ -504 +504 @@
   * from a line coverage could also be MAX_LENGTH, MIN_LENGTH, LENGTH_RANGE, LENGTH_SUM, LENGTH_MEAN, LENGTH_STDDEV, COMBINED_MAX_LENGTH, COMBINED_MIN_LENGTH, COMBINED_MEAN_LENGTH, COMBINED_STDDEV_LENGTH, LENGTH_OF_LINE_WITH_GREATEST_VALUE, LENGTH_OF_LINE_WITH_SMALLEST_VALUE, LENGTH_OF_LINE_WITH_MOST_FREQUENT_VALUE, LENGTH_OF_LEAST_FREQUENT_VALUE, VALUE_OF_LONGEST, VALUE_OF_SHORTEST, VALUE_OF_COMBINED_LONGEST, VALUE_OF_COMBINED_SHORTEST, WEIGHTED_SUM, WEIGHTED_MEAN
 
-  * from a polygon coverage could also be MAX_AREA, MIN_AREA, AREA_RANGE, AREA_SUM, AREA_MEAN, AREA_STDDEV, COMBINED_MAX_AREA, COMBINED_MIN_AREA, COMBINED_MEAN_AREA, COMBINED_STDDEV_AREA, AREA_OF_POLYGON_WITH_GREATEST_VALUE, AREA_OF_POLYGON_WITH_SMALLEST_VALUE, AREA_OF_POLYGON_WITH_MOST_FREQUENT_VALUE, AREA_OF_LEAST_FREQUENT_VALUE, VALUE_OF_LARGEST, VALUE_OF_SMALLEST, VALUE_OF_COMBINED_LARGEST, VALUE_OF_COMBINED_SMALLEST, WEIGHTED_SUM, WEIGHTED_MEAN
+  * from a polygon coverage could also be MAX_AREA, MIN_AREA, AREA_RANGE, AREA_SUM, AREA_MEAN, AREA_STDDEV, COMBINED_MAX_AREA, COMBINED_MIN_AREA, COMBINED_MEAN_AREA, COMBINED_STDDEV_AREA, AREA_OF_POLYGON_WITH_GREATEST_VALUE, AREA_OF_POLYGON_WITH_SMALLEST_VALUE, AREA_OF_POLYGON_WITH_MOST_FREQUENT_VALUE, AREA_OF_LEAST_FREQUENT_VALUE, VALUE_OF_LARGEST, VALUE_OF_SMALLEST, VALUE_OF_COMBINED_LARGEST, VALUE_OF_COMBINED_SMALLEST, WEIGHTED_SUM, WEIGHTED_MEAN, VALUE_AT_PIXEL_CENTROID
+
+  * ST_GeomToRaster(rast, 'schemaname', 'tablename', 'geomolumnname', 'METHOD') - A variant of ST_GeomToRaster() accepting an already defined raster. This is the equivalent to a variant of ST_UnionToRaster(rast, set of geometry, ...) described in Objective FV.19 but not an aggregate and faster while we wait for a faster ST_Union().
 
   * ST_EuclidianDistance() (see [http://trac.osgeo.org/postgis/wiki/PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools the GSoC project]) this function takes advantage of the KNN index of geometry to quickly find the geometry nearest to the pixel centroid and compute its distance.