Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
NAME
v.neighbors - Neighborhood analysis tool for vector point maps.
Makes each cell value a function of the attribute values assigned to the vector points or centroids around it, and stores new cell values in an output raster map.
KEYWORDS
vector,
algebra,
statistics,
raster,
aggregation
SYNOPSIS
v.neighbors
v.neighbors --help
v.neighbors input=name [layer=string] output=name method=string size=float [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- --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 vector map
- Or data source for direct OGR access
- layer=string
- Layer number or name ('-1' for all layers)
- A single vector map can be connected to multiple database tables. This number determines which table to use. When used with direct OGR access this is the layer name.
- Default: -1
- output=name [required]
- Name for output raster map
- method=string [required]
- Neighborhood operation
- Options: count
- Default: count
- size=float [required]
- Neighborhood diameter in map units
Makes each cell value a function of the attribute values assigned to the
vector points or centroids around it, and stores new cell values in
an output raster map layer.
Count the number of schools for a given grid (North Carolina sample
dataset):
g.region vector=schools_wake res=100 -p -a
v.neighbors input=schools_wake output=schools_wake_3000m method=count size=3000
d.mon wx0
d.rast schools_wake_3000m
d.vect schools_wake
The result gives for each grid cell the number of points (here: schools)
not farther than 1500 meter away (half of the given
size value)
from the respective cell center.
r.neighbors
Radim Blazek
SOURCE CODE
Available at:
v.neighbors source code
(history)
Latest change: Mon Nov 18 20:15:32 2019 in commit: 1a1d107e4f6e1b846f9841c2c6fabf015c5f720d
Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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GRASS Development Team,
GRASS GIS 7.8.8dev Reference Manual