r.pi.graph.dec - GRASS GIS manual

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

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.pi.graph.dec - Graph Theory - successive criteria-based deletion of patches.

KEYWORDS

raster

SYNOPSIS

r.pi.graph.dec

r.pi.graph.dec --help

r.pi.graph.dec [-al] input=name [id=string] output=string keyval=integer distance=float neighborhood=string index=string choice=string [seed=integer] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-a: Set for 8 cell-neighbors. 4 cell-neighbors are default
-l: Set to perform deletion for the whole landscape rather than cluster-wise
--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 [required]: Name of input raster map
id=string: Base name for the ID raster files
output=string [required]: Name of the output ASCII file
keyval=integer [required]: Key value
distance=float [required]: Bounding distance [0 for maximum distance]
neighborhood=string [required]: Neighborhood definition; Options: nearest_neighbor, relative_neighbor, gabriel, spanning_tree
index=string [required]: Cluster index; Options: connectance_index, gyration_radius, cohesion_index, percent_patches, percent_area, number_patches, number_links, mean_patch_size, largest_patch_size, largest_patch_diameter, graph_diameter
choice=string [required]: Cluster index; Options: smallest_first, biggest_first, random, link_min, link_max
seed=integer: Seed for the random number generation

DESCRIPTION
NOTES
EXAMPLE
SEE ALSO
AUTHORS

DESCRIPTION

Graph Theory - successive criteria-based deletion of patches.

NOTES

...

EXAMPLE

An example for the North Carolina sample dataset:

g.region -d
...

AUTHORS

Programming: Elshad Shirinov
Scientific concept: Dr. Martin Wegmann
Department of Remote Sensing
Remote Sensing and Biodiversity Unit
University of Wuerzburg, Germany

Port to GRASS GIS 7: Markus Metz

SOURCE CODE

Available at: r.pi.graph.dec source code (history)

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