nearby: nearby geometries

In rspatial/terra: Spatial Data Analysis

nearby geometries

Description

Identify geometries that are near to each other. Either get the index of all geometries within a certain distance, or the k nearest neighbors, or (with nearest) get the nearest points between two geometries.

Usage

## S4 method for signature 'SpatVector'
nearby(x, y=NULL, distance=0, k=1, centroids=TRUE, symmetrical=TRUE, method="geo")

## S4 method for signature 'SpatVector'
nearest(x, y, pairs=FALSE, centroids=TRUE, lines=FALSE, method="geo")

Arguments

x	SpatVector
y	SpatVector or NULL
distance	numeric. maximum distance
k	positive integer. number of neighbors. Ignored if distance > 0
centroids	logical. Should the centroids of polygons be used?
symmetrical	logical. If TRUE, a near pair is only included once. That is, if geometry 1 is near to geometry 3, the implied nearness between 3 and 1 is not reported. Ignored if k neighbors are returned
method	character. One of "geo", "haversine", "cosine". With "geo" the most precise but slower method of Karney (2003) is used. The other two methods are faster but less precise
pairs	logical. If TRUE pairwise nearest points are returned (only relevant when using at least one SpatVector of lines or polygons
lines	logical. If TRUE lines between the nearest points instead of (the nearest) points

Value

matrix

See Also

distance, relate, adjacent

Examples

f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
nearby(v, distance=12000)

rspatial/terra documentation built on Jan. 7, 2025, 6:27 p.m.