Changes between Version 93 and Version 94 of WKTRaster/SpecificationWorking01
- Timestamp:
- Dec 22, 2009, 10:31:00 AM (14 years ago)
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WKTRaster/SpecificationWorking01
v93 v94 240 240 241 241 There is already a ST_raster_envelope() function but this has actually the behavior of the ST_ConvexHull(raster, 'WITHNODATA') described below. There is also a ticket (#348) related to this function: http://trac.osgeo.org/postgis/ticket/348 242 243 [[Image(WKTRasterEnvelopeAndConvexHull.gif)]] 242 244 243 245 '''ST_ConvexHull(raster) -> polygon geometry''' - Returns the minimum convex geometry that encloses every significant pixel from the raster.