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WKT Raster
Welcome to the WKT Raster project home page!
WKT Raster is an ongoing project aiming at developing raster support in PostGIS. It is a new project very different from the previous PGRaster project and also very different from Oracle Spatial GeoRaster.
The goal of WKT Raster is to implement the RASTER type as much as possible like the GEOMETRY type is implemented in PostGIS and to offer a single set of overlay SQL functions (like ST_Intersects) operating seamlessly on vector and raster coverages.
Specification
- Working Specification
- Working Documentation (very preliminary)
- Original Project Presentation - rationale, examples and preliminary specifications: PPT, PDF (v1.0)
For more details and examples of application:
- Search for "WKT Raster" in the PostGIS mailing list archive or in Nabble
- Write to Pierre Racine
Overview
- is as simple as PostGIS...
- one table = one raster coverage (like a vector coverage)
- one row = one tile or one raster object (like a vector coverage where one row = one geometry)
- only one new type: RASTER (like the PostGIS GEOMETRY type)
- each raster tile has a pixel size, a width and a height, a variable number of band, a pixel type per band and a nodata value per band. Everything essential to do base raster GIS operations.
Attachments (5)
- WKTRasterIntro-Geomatique2009.pdf (1.1 MB ) - added by 15 years ago.
- FOSS4G2010_Pierre.pdf (951.6 KB ) - added by 14 years ago.
- FOSS4G2010_Jorge.pdf (4.2 MB ) - added by 14 years ago.
-
postgisraster_on_gvsig.zip
(4.8 MB
) - added by 14 years ago.
Video of PostGIS Raster gvSIG plugin.
- PierreRacine_FOSS4G-2011.pdf (2.3 MB ) - added by 13 years ago.
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