Changes between Version 93 and Version 94 of WKTRaster/SpecificationWorking01


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Timestamp:
Dec 22, 2009, 10:31:00 AM (14 years ago)
Author:
pracine
Comment:

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  • WKTRaster/SpecificationWorking01

    v93 v94  
    240240
    241241 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)]]
    242244
    243245'''ST_ConvexHull(raster) -> polygon geometry''' - Returns the minimum convex geometry that encloses every significant pixel from the raster.