Feature Data Objects Provider for GDAL
Overview
The Feature Data Objects (FDO) API provides access to data
in a data store.
A provider is a specific implementation of the FDO API
that provides access to data in a particular data store.
The FDO Provider for GDAL provides FDO with access to a
variety of raster file formats supported by the OSGeo GDAL library.
Characteristics
The FDO Provider for GDAL has the following characteristics:
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Read-only access is provided to raster data in
supported formats.
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Geolocation and coordinate information is read
where available and depending on the capabilities
of each GDAL format driver.
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Supported formats include JPEG, GIF, PNG, GeoTIFF,
NITF, Imagine, PCIDSK, DTED.
Depending on optional items built into GDAL, formats
including JPEG2000, ECW, MrSID, and HDF may be available.
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Schema configuration of the data store is provided to
the FDO Provider for GDAL through an XML file containing
the Geographic Markup Language (GML) definition of the
schema that maps raster data files in the data store to
feature classes and property mappings in the FDO data model.
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Currently the FDO Provider for GDAL does not support
the MOSAIC operation. This capability is under development.
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The FDO Provider for GDAL does not currently support
the Bitonal color model. Bitonal TIFF files are promoted
to 8 bit integers with values 0 and 1.
Connection
This information supplements the Establishing a Connection chapter
in the FDO Developers Guide.
You can connect to FDO Provider for GDAL by specifying the
DefaultRasterFileLocation of the raster file(s) that you want to use.
This parameter may correspond to a single file or a directory
containing a number of raster files.
More information on the GDAL library, supported formats,
and specific capabilities of particular format drivers can
be found at www.gdal.org.