nearest_neighbor_search
searches for the k nearest neighbors of a set of
query points.
nearest_neighbor_search(distances, k, query_indices = NULL,
search_indices = NULL, radius = NULL)
A distances
object.
The number of neighbors to search for.
An integer vector with point indices to query. If NULL
,
all data points in distances
are queried.
An integer vector with point indices to search among. If NULL
,
all data points in distances
are searched over.
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
).
A matrix with point indices for the nearest neighbors. Columns in this matrix indicate queries, and rows are ordered by distances from the query.