i.spectral

Langue: en

Autres versions - même langue

Version: 372789 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)

Sommaire

NAME

i.spectral - displays spectral response at user specified locations in group or images

KEYWORDS

imagery, raster, multispectral

SYNOPSIS

i.spectral
i.spectral help
i.spectral [-imc] [group=string] [raster=string[,string,...]] [output=string] [--verbose] [--quiet]

Flags:

-i

Use image list and not group
-m

Select multiple points
-c

label with coordinates instead of numbering
--verbose

Verbose module output
--quiet

Quiet module output

Parameters:

group=string

group input
raster=string[,string,...]

raster input maps
output=string

write output to PNG image

DESCRIPTION

i.spectral displays spectral response at user specified locations in images.

NOTES

This script needs gnuplot to be installed.

EXAMPLE

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

SEE ALSO

d.what.rast
d.where
r.what

AUTHOR

Markus Neteler
Francesco Pirotti

Last changed: $Date: 2006-04-29 16:13:04 +0200 (Sat, 29 Apr 2006) $

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