r.pi.graph.red - GRASS GIS manual

NAME

r.pi.graph.red - Graph Theory - decreasing distance threshold option.

KEYWORDS

raster, landscape structure analysis, connectivity analysis

SYNOPSIS

r.pi.graph.red

r.pi.graph.red --help

r.pi.graph.red [-a] input=name output=string keyval=integer distance=float step=float neighborhood=string index=string[,string,...] stats=string [--help] [--verbose] [--quiet] [--ui]

Flags:

-a: Set for 8 cell-neighbors. 4 cell-neighbors are default
--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
output=string [required]: Name of the output ASCII file
keyval=integer [required]: Key value
distance=float [required]: Distance at which to begin decreasing
step=float [required]: Step to decrease the distance
neighborhood=string [required]: Neighborhood definition; Options: nearest_neighbor, relative_neighbor, gabriel, spanning_tree
index=string[,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
stats=string [required]: Statistical method to perform on the values; Options: average, median, variance, std_deviat, min, max

DESCRIPTION
NOTES
EXAMPLE
SEE ALSO
AUTHORS

DESCRIPTION

Graph Theory - decreasing distance threshold option.

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.red source code (history)

Latest change: Tuesday Sep 19 09:59:22 2023 in commit: e76c325998c8cd9053ce012a5adbb79f33ab0779