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.lmf - Performs Temporal Local Maximum Fitting of vegetation indices, works also for surface reflectance data.
KEYWORDS
imagery,
LMF,
Vegetation Indices,
Atmospheric correction,
Temporal
SYNOPSIS
i.lmf
i.lmf --help
i.lmf input=name[,name,...] ndate=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:
- input=name[,name,...] [required]
- Names of input layers
- ndate=integer [required]
- Number of map layers per year
- output=name [required]
- Name of the output layer
i.lmf calculates the Local maximum fitting of a temporal image series,
intially for vegetation indices, it also works for surface reflectance.
This is a first level port, only a fast fitting is done, see TODO.
The number of bands is potentially several years, nfiles and ndates
are respectively the number of pixels and the number of pixels in a year.
Original links are found here
SAWADA, 2001:
http://www.affrc.go.jp/ANDES/sawady/index.html
NAGATANI et al., 2002:
http://www.gisdevelopment.net/aars/acrs/2002/pos2/184.pdf
Yann Chemin and Kiyoshi Honda repaired it and ported it from SGI/OpenMP to Linux.
http://www.rsgis.ait.ac.th/~honda/lmf/lmf.html
Port the full detailed algorithm from Fortran, and vastly unemcomber/clean it.
It will make the algorithm must slower though, gaining only a marginal fitting
strength, for my actual experience with VIs curves.
r.series
Yann Chemin, International Rice Research Institute, The Philippines
SOURCE CODE
Available at:
i.lmf 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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GRASS Development Team,
GRASS GIS 7.8.8dev Reference Manual