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

6       i.spectral  - Displays spectral response at user specified locations in
7       group or images.
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KEYWORDS

10       imagery, querying, raster, multispectral
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SYNOPSIS

13       i.spectral
14       i.spectral --help
15       i.spectral        [-cgt]         [group=name]           [subgroup=name]
16       [raster=name[,name,...]]        coordinates=east,north[,east,north,...]
17       [output=name]   [format=string]   [--overwrite]  [--help]   [--verbose]
18       [--quiet]  [--ui]
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20   Flags:
21       -c
22           Show sampling coordinates instead of numbering in the legend
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24       -g
25           Use gnuplot for display
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27       -t
28           output to text file
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30       --overwrite
31           Allow output files to overwrite existing files
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33       --help
34           Print usage summary
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36       --verbose
37           Verbose module output
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39       --quiet
40           Quiet module output
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42       --ui
43           Force launching GUI dialog
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45   Parameters:
46       group=name
47           Name of input imagery group
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49       subgroup=name
50           Name of input imagery subgroup
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52       raster=name[,name,...]
53           Name of input raster map(s)
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55       coordinates=east,north[,east,north,...] [required]
56           Coordinates
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58       output=name
59           Name for output image (or text file for -t)
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61       format=string
62           Graphics format for output file
63           Options: png, eps, svg
64           Default: png
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DESCRIPTION

67       i.spectral  displays  spectral  response at user specified locations in
68       images.
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NOTES

71       This script needs gnuplot to be installed.
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EXAMPLE

74       Analysis of LANDSAT TM7 channels (North Carolina dataset):
75       g.region raster=lsat7_2002_10 -p
76       i.spectral -g input=lsat7_2002_10,lsat7_2002_20,lsat7_2002_30,lsat7_2002_40,lsat7_2002_50,lsat7_2002_70 \
77                  coordinates=636069,215440,637958,223393,633277,223605
78       Spectral plot of 3 different land cover types:  (1)  water,  (2)  green
79       vegetation, and (3) highway
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81       North Carolina sample dataset:
82       g.region raster=lsat7_2002_10 -p
83       LIST=`g.list type=raster pattern="lsat7_2002_[1-5,7]0" separator=","`
84       i.spectral input=$LIST coordinates=637502.25,221744.25
85       This  will search all LANDSAT map for 2002 but select only the B, G, R,
86       NIR, and MIR channels.
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SEE ALSO

89        d.where, r.what
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AUTHOR

92       Markus Neteler
93       Francesco Pirotti
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SOURCE CODE

96       Available at: i.spectral source code (history)
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98       Main index | Imagery index | Topics index | Keywords index |  Graphical
99       index | Full index
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101       © 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
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105GRASS 7.8.5                                                      i.spectral(1)