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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.water - Water detection from satellite data derived indices, 1 if found, 0 if not

KEYWORDS

imagery, water, detection

SYNOPSIS

i.water
i.water --help
i.water ndvi=name [albedo=name] [modref7=name] 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:

ndvi=name [required]
Name of the NDVI layer [-]
albedo=name
Name of the Albedo layer [-]
modref7=name
Name of the Modis surface reflectance band 7 layer [-]
output=name [required]
Name of the output water layer [0/1]

Table of contents

DESCRIPTION

i.water calculates a water layer after Xiao et al (2005) and Roy et al (2005). If input is albedo and ndvi, it will process in generic mode. If input is ndvi and MODIS Band 7 reflectance, it will process in MODIS mode.

NOTES

REFERENCES

Xiao X., Boles S., Liu J., Zhuang D., Frokling S., Li C., Salas W., Moore III B. (2005). Mapping paddy rice agriculture in southern China using multi-temporal MODIS images. Remote Sensing of Environment 95:480-492. Roy D.P., Jin Y., Lewis P.E., Justice C.O. (2005). Prototyping a global algorithm for systematic fire-affected area mapping using MODIS time series data. Remote Sensing of Environment 97:137-162.

SEE ALSO

i.vi
i.albedo
i.wi

AUTHOR

Yann Chemin, International Rice Research Insitute, The Philippines

SOURCE CODE

Available at: i.water 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.

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