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i.spectral(1)		    GRASS GIS User's Manual		 i.spectral(1)

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:
       -c
	   Show	sampling coordinates instead of	numbering in the legend

       -g
	   Use gnuplot for display

       -t
	   output to text file

       --overwrite
	   Allow output	files to overwrite existing files

       --help
	   Print usage summary

       --verbose
	   Verbose module output

       --quiet
	   Quiet module	output

       --ui
	   Force launching GUI dialog

   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,...]A	[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=637502.25,221744.25
       This  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)

       Main index | Imagery index | Topics index | Keywords index |  Graphical
       index | Full index

       A(C) 2003-2020 GRASS Development	Team, GRASS GIS	7.8.3 Reference	Manual

GRASS 7.8.3							 i.spectral(1)

NAME | KEYWORDS | SYNOPSIS | DESCRIPTION | NOTES | EXAMPLE | SEE ALSO | AUTHOR | SOURCE CODE

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