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NAME

i.vi.mpi - Calculates different types of vegetation indices (mpi)
13 types of vegetation indices from red and nir,and only some requiring additional bands

KEYWORDS

vegetation index, biophysical parameters

SYNOPSIS

i.vi.mpi
i.vi.mpi --help
i.vi.mpi viname=string red=name nir=name [green=name] [blue=name] [chan5=name] [chan7=name] [tmp=integer] output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--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:

viname=string [required]
Name of VI
Options: dvi, evi, gvi, gari, gemi, ipvi, msavi, msavi2, ndvi, pvi, savi, sr, vari, wdvi
Default: ndvi
dvi: Difference Vegetation Index
evi: Enhanced Vegetation Index
gvi: Green Vegetation Index
gari: Green atmospherically resistant vegetation index
gemi: Global Environmental Monitoring Index
ipvi: Infrared Percentage Vegetation Index
msavi: Modified Soil Adjusted Vegetation Index
msavi2: second Modified Soil Adjusted Vegetation Index
ndvi: Normalized Difference Vegetation Index
pvi: Perpendicular Vegetation Index
savi: Soil Adjusted Vegetation Index
sr: Simple Ratio
vari: Visible Atmospherically Resistant Index
wdvi: Weighted Difference Vegetation Index
red=name [required]
Name of the RED Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
nir=name [required]
Name of the NIR Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
green=name
Name of the GREEN Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
blue=name
Name of the BLUE Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
chan5=name
Name of the CHAN5 Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
chan7=name
Name of the CHAN7 Channel surface reflectance map [0.0;1.0]
Range: [0.0;1.0]
tmp=integer
User input for number of operation
output=name [required]
Name of the output vi layer
Name for output raster map

Table of contents

DESCRIPTION

i.vi calculates vegetation indices based on biophysical parameters.

Description

NDVI

NOTES

Originally from kepler.gps.caltech.edu
A FAQ on Vegetation in Remote Sensing
Written by Terrill W. Ray
Div. of Geological and Planetary Sciences
California Institute of Technology
email: terrill@mars1.gps.caltech.edu
Snail Mail: Terrill Ray
Division of Geological and Planetary Sciences
Caltech
Mail Code 170-25
Pasadena, CA 91125

TODO

SEE ALSO

i.albedo

AUTHORS

GRASS Development Team.

SOURCE CODE

Available at: i.vi.mpi source code (history)


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© 2003-2020 GRASS Development Team, GRASS GIS 7.8.4dev Reference Manual