connected_neighbors: Find the connected sets for a location and its k nearest...
In BenjaK/scanstatistics: Space-Time Anomaly Detection using Scan Statistics

Returns a set of sets, each set of the latter type containing the location itself and zero or more of its neighbors, if they are connected.

1	connected_neighbors(neighbors, adjacency_matrix)

`neighbors`	A vector of neighbors to a location, the first element of the vector being the specific location, and the other elements its other nearest neighbors. Locations should be encoded as integers.
`adjacency_matrix`	A boolean matrix, with element (i,j) set to TRUE if location j is adjacent to location i.