NAME¶
r.external - Link GDAL supported raster file to a binary raster
map layer.
KEYWORDS¶
raster, import
SYNOPSIS¶
r.external
r.external help
r.external [-
oerf] [
input=
name]
[
source=
string] [
output=
name]
[
band=
integer] [
title=
"phrase"]
[--
overwrite] [--
verbose] [--
quiet]
Flags:¶
- -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
- -f
-
List supported formats and exit
- --overwrite
-
Allow output files to overwrite existing files
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- input=name
-
Raster file to be linked
- source=string
-
Name of non-file GDAL data source
- output=name
-
Name for output raster map
- band=integer
-
Band to select (default: all)
- title=
-
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: 2011-06-03 18:42:11 +0200 (Fri, 03 Jun 2011) $
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© 2003-2011 GRASS Development Team
