v.neighbors(1grass) GRASS GIS User's Manual v.neighbors(1grass)
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
DESCRIPTION
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.
EXAMPLE
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.
SEE ALSO
r.neighbors
AUTHOR
Radim Blazek
SOURCE CODE
Available at: v.neighbors source code (history)
Accessed: unknown
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GRASS 7.8.7 v.neighbors(1grass)
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