r.pi.graph.red

Graph Theory - decreasing distance threshold option.

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

Example:

r.pi.graph.red input=name output=string keyval=integer distance=float step=float neighborhood=string index=string stats=string

grass.script.run_command("r.pi.graph.red", input, output, keyval, distance, step, neighborhood, index, stats, flags=None, verbose=False, quiet=False, superquiet=False)

Example:

gs.run_command("r.pi.graph.red", input="name", output="string", keyval=integer, distance=float, step=float, neighborhood="string", index="string", stats="string")

Parameters

Command linePython (grass.script)

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
    Allowed values: nearest_neighbor, relative_neighbor, gabriel, spanning_tree
index=string [,string,...] [required]
    Cluster index
    Allowed values: 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
    Allowed values: average, median, variance, std_deviat, min, max
-a
    Set for 8 cell-neighbors. 4 cell-neighbors are default
--help
    Print usage summary
--verbose
    Verbose module output
--quiet
    Quiet module output
--qq
    Very quiet module output
--ui
    Force launching GUI dialog

input : str, required
    Name of input raster map
    Used as: input, raster, name
output : str, required
    Name of the output ASCII file
    Used as: output
keyval : int, required
    Key value
distance : float, required
    Distance at which to begin decreasing
step : float, required
    Step to decrease the distance
neighborhood : str, required
    Neighborhood definition
    Allowed values: nearest_neighbor, relative_neighbor, gabriel, spanning_tree
index : str | list[str], required
    Cluster index
    Allowed values: 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 : str, required
    Statistical method to perform on the values
    Allowed values: average, median, variance, std_deviat, min, max
flags : str, optional
    Allowed values: a
    a
        Set for 8 cell-neighbors. 4 cell-neighbors are default
verbose: bool, optional
    Verbose module output
    Default: False
quiet: bool, optional
    Quiet module output
    Default: False
superquiet: bool, optional
    Very quiet module output
    Default: False

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: Thursday Feb 20 13:02:26 2025 in commit 53de819