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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

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

Table of contents

DESCRIPTION

Graph Theory - successive criteria-based deletion of patches.

NOTES

...

EXAMPLE

An example for the North Carolina sample dataset:
g.region -d
...

SEE ALSO

r.pi.corearea, r.pi.corr.mw, r.pi.csr.mw, r.pi.export, r.pi.graph, r.pi.graph.pr, r.pi.graph.red, r.pi.grow, r.pi.import, r.pi.index, r.pi.lm, r.pi.odc, r.pi.prob.mw, r.pi.rectangle, r.pi

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: 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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© 2003-2022 GRASS Development Team, GRASS GIS 7.8.8dev Reference Manual