Changes between Version 29 and Version 30 of WKTRaster/SpecificationFinal01


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Timestamp:
Aug 27, 2010, 12:19:18 PM (14 years ago)
Author:
pracine
Comment:

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  • WKTRaster/SpecificationFinal01

    v29 v30  
    166166'''ST_DumpAsPolygons(raster, integer) -> geomval set''' - Returns a set of "geomval" value, one for each contiguous group of pixel sharing the same value for the provided band.
    167167
    168  This is a set-returning function (SRF). A "geomval" value is a complex type composed of a polygon geometry (one for each contiguous 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.
     168 This is a set-returning function (SRF). A "geomval" value is a complex type composed of a polygon geometry (one for each contiguous group of pixel sharing the same value) and the value associated with this geometry. These values are always returned as double precision number. The shape of each polygon follow pixels edges.
    169169
    170170 Variant 1: ST_DumpAsPolygons(raster) -> geomval set -- default to band # 1