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.pr - Graph Theory - iterative removal (patch relevance analysis).
KEYWORDS
raster
SYNOPSIS
r.pi.graph.pr
r.pi.graph.pr --help
r.pi.graph.pr [-ap] input=name output=string keyval=integer distance=float neighborhood=string index=string [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -a
- Set for 8 cell-neighbors. 4 cell-neighbors are default
- -p
- Defines, if the output should be a percentual of the cluster index values.
- --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
- output=string [required]
- Name of the new raster 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
Graph Theory - iterative removal (patch relevance analysis).
...
An example for the North Carolina sample dataset:
r.pi.corearea,
r.pi.corr.mw,
r.pi.csr.mw,
r.pi.export,
r.pi.graph,
r.pi.graph.dec,
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
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.pr 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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© 2003-2023
GRASS Development Team,
GRASS GIS 7.8.8dev Reference Manual