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i.spectral.1grass
Langue: en
Version: 332038 (ubuntu - 24/10/10)
Section: 1 (Commandes utilisateur)
NAME
i.spectral - Displays spectral response at user specified locations in group or images.KEYWORDS
imagery, raster, multispectralSYNOPSIS
i.spectrali.spectral help
i.spectral [-imc] [group=string] [raster=string[,string,...]] [output=string] [--verbose] [--quiet]
Flags:
- -i
Use image list and not group- -m
Select multiple points- -c
Label with coordinates instead of numbering- --verbose
Verbose module output- --quiet
Quiet module output
Parameters:
- group=string
Group input- raster=string[,string,...]
Raster input maps- output=string
Write output to PNG image
DESCRIPTION
i.spectral displays spectral response at user specified locations in images.NOTES
This script needs gnuplot to be installed.EXAMPLE
To analyze a time series of maps, run:d.rast map_1
LIST=`g.mlist type=rast mapset=timeseries pat="map_*" | sort -t '_' -k 2 -n | tr '\n' ','| sed 's+,$++g'`
i.spectral -i rast=$LIST
This will search all maps in the mapset 'timeseries' which match have the 'map_' prefix and order by a number following this prefix (day of the year etc). The user is then asked to click into a map position and the resulting pixel values of all matching maps are drawn in the gnuplot output.
SEE ALSO
d.what.rastd.where
r.what
AUTHOR
Markus NetelerFrancesco Pirotti
Last changed: $Date: 2006-04-29 16:13:04 +0200 (sab, 29 apr 2006) $
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