Geography Reference
In-Depth Information
can find a complete list of supported formats on the GDAL home page
Vector support is provided by the OGR library. It too supports a large
number of formats, including shapefiles, MapInfo (tab and mid/mif),
PostGIS, GML, DGN, Oracle Spatial, and SQLite. The OGR library has
similar constraints as GDAL. You may have to provide your own ver-
sion of nonfree libraries needed to compile OGR (for example, Oracle
Spatial).
GDAL-Supported Formats
As I said earlier, GDAL provides a number of command-line utilities
for manipulating common raster formats. Operations such as warp-
ing, converting, and merging are all supported. You can also do coordi-
nate transformation (that means changing projections) when converting
between formats.
The list of supported formats in quite long. Some of the more pop-
ular raster formats supported by GDAL, and ones you are likely to
encounter, are shown in the following list. We haven't listed them all—to
get the full list, see the GDAL website.
• Arc/Info ASCII Grid
• Arc/Info Binary Grid (.
adf
)
• First Generation USGS DOQ (.
doq
)
• New Labeled USGS DOQ (.
doq
)
• ERMapper Compressed Wavelets (.
ecw
)
• ESRI .hdr Labelled
• ENVI .hdr Labelled Raster
• GMT Compatible netCDF
• GRASS Rasters
• TIFF/GeoTIFF (.
tif
)
• GXF—Grid eXchange File
• Hierarchical Data Format Release 4 (HDF4)
• Hierarchical Data Format Release 5 (HDF5)
• Erdas Imagine (.
img
)
• JPEG JFIF (.
jpg
)
• JPEG2000 (.
jp2
, .
j2k
)
• MrSID
• NetCDF
• Portable Network Graphics (.
png
)
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