Changes between Version 101 and Version 102 of WKTRaster/SpecificationWorking01
- Timestamp:
- Jan 5, 2010, 2:48:22 PM (14 years ago)
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WKTRaster/SpecificationWorking01
v101 v102 265 265 This is a set-returning function (SRF). A "geomval" value is a complex type composed of a polygon geometry (one for each group of pixel sharing the same value) and the value associated with this geometry. These values are always returned as a value of type double precision. The shape of each polygon follow pixels edges. 266 266 267 Variant 1: ST_AsPolygon(raster) -> geomval set -- default to band # 1 268 Variant 2: ST_AsPolygon(raster, integer, 'UNGROUP') 267 Variant 1: ST_AsPolygon(raster) -> geomval set -- default to band # 1[[BR]] 268 Variant 2: ST_AsPolygon(raster, integer, 'UNGROUP')[[BR]] 269 269 Variant 3: ST_AsPolygon(raster, 'UNGROUP') -- default to band # 1 270 270 … … 370 370 Variant 5: 371 371 372 ST_Intersection(raster, integer, raster, integer, 'geometry') -> geometry 372 ST_Intersection(raster, integer, raster, integer, 'geometry') -> geometry[[BR]] 373 373 ST_Intersection(raster, raster, 'geometry') -> geometry -- default to band # 1 374 374