1i.spectral(1)                 Grass 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, raster, multispectral
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SYNOPSIS

13       i.spectral
14       i.spectral help
15       i.spectral   [-imc]    [group=string]      [raster=string[,string,...]]
16       [output=string]
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18   Flags:
19       -i  Use image list and not group
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21       -m  Select multiple points
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23       -c  label with coordinates instead of numbering
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25   Parameters:
26       group=string
27           group input
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29       raster=string[,string,...]
30           raster input maps
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32       output=string
33           write output to PNG image
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DESCRIPTION

36       i.spectral  displays  spectral  response at user specified locations in
37       images.
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NOTES

40       This script needs gnuplot to be installed.
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EXAMPLE

43       To analyze a time series of maps, run:
44       d.rast map_1
45       LIST=`g.mlist type=rast mapset=timeseries pat="map_*" | sort -t '_'  -k
46       2 -n | tr '\n' ','| sed 's+,$++g'`
47       i.spectral -i rast=$LIST
48         This will search all maps in the mapset 'timeseries' which match have
49       the 'map_' prefix and order by a number following this prefix  (day  of
50       the  year etc). The user is then asked to click into a map position and
51       the resulting pixel values of all matching maps are drawn in  the  gnu‐
52       plot output.
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SEE ALSO

55       d.what.rast
56       d.where
57       r.what
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AUTHOR

60       Markus Neteler
61       Francesco Pirotti
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63       Last changed: $Date: 2006/04/29 14:13:04 $
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65       Full index
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69GRASS 6.2.2                                                      i.spectral(1)