i.spectral(1grass) | GRASS GIS User's Manual | i.spectral(1grass) |
i.spectral - Displays spectral response at user specified locations in group or images.
imagery, querying, raster, multispectral
i.spectral
i.spectral --help
i.spectral [-cgt] [group=name]
[subgroup=name] [raster=name[,name,...]]
coordinates=east,north[,east,north,...]
[output=name] [format=string]
[--overwrite] [--help] [--verbose] [--quiet]
[--ui]
i.spectral displays spectral response at user specified locations in images.
This script needs gnuplot to be installed.
Analysis of LANDSAT TM7 channels (North Carolina dataset):
g.region raster=lsat7_2002_10 -p i.spectral -g input=lsat7_2002_10,lsat7_2002_20,lsat7_2002_30,lsat7_2002_40,lsat7_2002_50,lsat7_2002_70 \
coordinates=636069,215440,637958,223393,633277,223605
Spectral plot of 3 different land cover types: (1) water, (2) green vegetation, and (3) highway
North Carolina sample dataset:
g.region raster=lsat7_2002_10 -p LIST=`g.list type=raster pattern="lsat7_2002_[1-5,7]0" separator=","` i.spectral input=$LIST coordinates=637502.25,221744.25This will search all LANDSAT map for 2002 but select only the B, G, R, NIR, and MIR channels.
d.where, r.what
Markus Neteler
Francesco Pirotti
Available at: i.spectral source code (history)
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© 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
GRASS 7.8.5 |