nn: Nearest Neighbor

In swarm-lab/swaRm: Processing Collective Movement Data

Nearest Neighbor

Description

Given the locations of different objects, this function determines the identity of the nearest neighboring object to each object.

Usage

nn(x, y, id, geo = FALSE)

Arguments

x	A vector of x (or longitude) coordinates.
y	A vector of y (or latitude) coordinates.
id	A vector corresponding to the unique identities of each track.
geo	A logical value indicating whether the locations are defined by geographic coordinates (pairs of longitude/latitude values). Default: FALSE.

Value

A vector of the same length as x and y representing the identity of the nearest neighboring object to each object.

Author(s)

Simon Garnier, [e-mail]

See Also

nnd

Examples

x <- rnorm(25)
y <- rnorm(25, sd = 3)
id <- 1:25
nn(x, y, id)

swarm-lab/swaRm documentation built on Dec. 3, 2023, 9:30 p.m.