r.mcda.ahp - GRASS GIS manual

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

r.mcda.ahp - Generates a raster map classified with analytic hierarchy process (AHP).

KEYWORDS

raster, Analytic Hierarchy Process (AHP), Multi Criteria Decision Analysis (MCDA)

SYNOPSIS

r.mcda.ahp

r.mcda.ahp --help

r.mcda.ahp [-k] criteria=name[,name,...] pairwise=string output=string [--help] [--verbose] [--quiet] [--ui]

Flags:

-k: build a void pairwise comparison matrix and exit (no yet implemented)
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

criteria=name[,name,...] [required]: Name of criteria raster maps
pairwise=string [required]: Pairwise comparison matrix
output=string [required]: output classified raster map

DESCRIPTION
NOTES
TODO
SEE ALSO
AUTHORS

DESCRIPTION

The r.mcda.ahp Generate a raster map classified with analytic hierarchy process (AHP) [Saaty, 1977 and Saaty & Vargas, 1991]

(GRASS python Script)

NOTES

It is mandatory to build a pairwise comparation table with the same order of input of criteria maps in the criteria field.

Example: r.mcda.ahp criteria=reclass_slope,reclass_sand,reclass_elev pairwise=pairwise output=outputMap

The file "pairwise" has to have a structure like this:

#start file

1.0, 0.2, 3.0

5.0, 1.0, 5.0

0.3, 0.2, 1.0

#comment: order: reclass_slope,reclass_sand,reclass_

#end file

The first row and first column are related to the first criteria (reclass_slope in our case); the second row and second column are related to the second criteria (reclass_sand in our case) and the third row and third column are related to the third criteria ( reclass_elev in our cas), and so on.

In the work directory should be generated a log.txt file were you can find additional information like: eigenvectors, eigenvalues, weights

TODO

AUTHORS

Antonio Boggia - Gianluca Massei
Department of Economics and Appraisal - University of Perugia - Italy

SOURCE CODE

Available at: r.mcda.ahp source code (history)

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