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90 lines
2.4 KiB
Plaintext
90 lines
2.4 KiB
Plaintext
PostGIS WKT Raster - Seamless operations between vector and raster layers
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-------------------------------------------------------------------------
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http://www.postgis.org/support/wiki/index.php?WKTRasterHomePage
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PostGIS Raster's goal is to implement the RASTER type as much as possible
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like the GEOMETRY type is implemented in PostGIS and to offer a single
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set of overlay SQL functions (like ST_Intersects) operating seamlessly
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on vector and raster coverages.
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raster/rt_core/ contains the primitives to deal with rasters in memory,
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the function to serialize/deserialize both in-memory and on-disk
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rasters, the functions to parse and output (hex)wkb.
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You can see raster/rt_core/testapi.c and raster/rt_core/testwkb.c for
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example usage.
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raster/rt_pg/ contains postgresql-specific wrappers, and SQL code to define
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the RASTER type.
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raster/doc/ contains technical references and RFC documents.
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REQUIREMENTS
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------------
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PostGIS Raster core lib depends on liblwgeom, as found in postgis
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source package as of SVN 2009-01 (latest 1.3.5 release won't work).
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Some PostGIS Raster functions depends on GDAL library version 1.6.0 or
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higher
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PostGIS Raster loader dependes on Python GDAL bindings.
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PostgreSQL interface depends on PostgreSQL version 8.3.5.
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BUILD
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-----
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To build PostGIS with raster support:
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$ ./configure --with-raster
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$ make
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Note that the 'configure' script isn't there if you fetched
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the code from the SVN repository. In that case running ./autogen.sh
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should create it for you.
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Under MinGW you might have to add "--with-pgconfig=/usr/local/pgsql/bin/pg_config" if
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configure can't find your pgsql path.
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PRE-INSTALL TEST
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----------------
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After a successful build, you can run:
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$ make rt-check
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It won't test postgresql interface, as that would require more setup
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then a simple make check. See POST-INSTALL TESTING for more info on how
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to test that part.
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INSTALL
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-------
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You need to install the library to the postgresql library
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directory. You do it by running:
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$ sudo make rt-install
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POST-INSTALL TEST
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-----------------
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You can run the post install tests against it:
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$ make rt-post-install-check
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USE
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---
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In order to enable your databases to use the raster
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functionalities you have to feed them the enabler script:
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$ psql -f raster/rt_pg/rtpostgis.sql $MYDB
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Note that you must have loaded PostGIS in the database
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in order for that to work (see PostGIS documentation
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for how to do that).
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