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git-svn-id: http://svn.osgeo.org/postgis/trunk@6804 b70326c6-7e19-0410-871a-916f4a2858ee
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Regina Obe 2011-02-11 22:31:44 +00:00
parent 391b212130
commit d58a16e223
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35
doc/reference_raster.xml
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@ -12,6 +12,41 @@
<sect1 id="RT_Loading_Rasters">
<title>Loading and Creating Rasters</title>
<para>For most use cases, you will create PostGIS rasters by loading existing raster files using the packaged <varname>raster2pgsql</varname> raster loader.</para>
<sect2 id="Raster_Creation">
<para>For the examples in this reference we will be using a raster table of dummy rasters - Formed with the following code </para>
<programlisting>CREATE TABLE dummy_rast(rid integer, rast raster);
INSERT INTO dummy_rast(rid, rast)
VALUES (1,
('01' -- little endian (uint8 ndr)
||
'0000' -- version (uint16 0)
||
'0000' -- nBands (uint16 0)
||
'0000000000000040' -- scaleX (float64 2)
||
'0000000000000840' -- scaleY (float64 3)
||
'000000000000E03F' -- ipX (float64 0.5)
||
'000000000000E03F' -- ipY (float64 0.5)
||
'0000000000000000' -- skewX (float64 0)
||
'0000000000000000' -- skewY (float64 0)
||
'00000000' -- SRID (int32 0)
||
'0A00' -- width (uint16 10)
||
'1400' -- height (uint16 20)
)::raster
),
-- Raster: 5 x 5 pixels, 3 bands, PT_8BUI pixel type, NODATA = 0
(2, ('01000003009A9999999999A93F9A9999999999A9BF000000E02B274A' ||
'41000000007719564100000000000000000000000000000000FFFFFFFF050005000400FDFEFDFEFEFDFEFEFDF9FAFEF' ||
'EFCF9FBFDFEFEFDFCFAFEFEFE04004E627AADD16076B4F9FE6370A9F5FE59637AB0E54F58617087040046566487A1506CA2E3FA5A6CAFFBFE4D566DA4CB3E454C5665')::raster);</programlisting>
</sect2>
</sect1>
<sect1 id="Raster_Management_Functions">
<title>Raster Management Functions</title>