GRASS logo

Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

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)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55


Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

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

© 2003-2022 GRASS Development Team, GRASS GIS 7.8.8dev Reference Manual