r.pi.graph.dec - GRASS GIS manual

NAME

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

KEYWORDS

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)