table of contents
- bullseye 7.8.5-1+deb11u1
- testing 8.2.0-3
- unstable 8.2.1-1
- experimental 8.2.1~rc1-1~exp1
i.spectral(1grass) | GRASS GIS User's Manual | i.spectral(1grass) |
NAME¶
i.spectral - Displays spectral response at user specified locations in group or images.
KEYWORDS¶
imagery, querying, raster, multispectral
SYNOPSIS¶
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]
Flags:¶
Parameters:¶
- group=name
-
Name of input imagery group - subgroup=name
-
Name of input imagery subgroup - raster=name[,name,...]
-
Name of input raster map(s) - coordinates=east,north[,east,north,...] [required]
-
Coordinates - output=name
-
Name for output image (or text file for -t) - format=string
-
Graphics format for output file
Options: png, eps, svg
Default: png
DESCRIPTION¶
i.spectral displays spectral response at user specified locations in images.
NOTES¶
This script needs gnuplot to be installed.
EXAMPLE¶
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.
SEE ALSO¶
d.where, r.what
AUTHOR¶
Markus Neteler
Francesco Pirotti
SOURCE CODE¶
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 |