NAME
r.external - Links GDAL supported raster data as a pseudo GRASS raster map.
KEYWORDS
raster, import, input, external
SYNOPSIS
r.external
r.external help
r.external [-foerhv] [input=name] [source=name] output=name [band=integer] [title=phrase] [--overwrite] [--verbose] [--quiet]
Flags:
- -f
- List supported formats and exit
- -o
- Override projection (use location's projection)
- -e
- Extend region extents based on new dataset
- Also updates the default region if in the PERMANENT mapset
- -r
- Require exact range
- -h
- Flip horizontally
- -v
- Flip vertically
- --overwrite
- Allow output files to overwrite existing files
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- input=name
- Name of raster file to be linked
- source=name
- Name of non-file GDAL data source
- output=name [required]
- Name for output raster map
- band=integer
- Band to select (default: all)
- title=phrase
- Title for resultant raster map
DESCRIPTION
r.external allows a user to link a GDAL supported raster file to a binary
raster map layer, from any GDAL supported raster map format, with an optional
title. The file is not imported but just registered as GRASS raster map.
EXAMPLES
RGB Orthophoto from GeoTIFF
# import of all channels:
r.external /home/user/data/maps/059100.tif out=ortho
g.region rast=ortho.3 -p
d.rgb r=ortho.1 g=ortho.2 b=ortho.3
r.composite r=ortho.1 g=ortho.2 b=ortho.3 output=ortho.rgb
SEE ALSO
r.in.gdal,
v.external
REFERENCES
GDAL Pages: http://www.gdal.org/
AUTHOR
Glynn Clements
Last changed: $Date: 2011-11-08 13:24:20 -0800 (Tue, 08 Nov 2011) $
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