nearest_neighbor_search: Nearest neighbor search

In distances: Tools for Distance Metrics

Nearest neighbor search

Description

nearest_neighbor_search searches for the k nearest neighbors of a set of query points.

Usage

nearest_neighbor_search(
  distances,
  k,
  query_indices = NULL,
  search_indices = NULL,
  radius = NULL
)

Arguments

distances	A distances object.
k	The number of neighbors to search for.
query_indices	An integer vector with point indices to query. If NULL, all data points in distances are queried.
search_indices	An integer vector with point indices to search among. If NULL, all data points in distances are searched over.
radius	Restrict the search to a fixed radius around each query. If fewer than k search points exist within this radius, no neighbors are reported (indicated by NA).

Value

A matrix with point indices for the nearest neighbors. Columns in this matrix indicate queries, and rows are ordered by distances from the query.

distances documentation built on Feb. 16, 2023, 7:59 p.m.