Identify higher order neighbors from a neighbor list. order must be greater than 1. When order equals 2 then the neighbors of the neighbors list is returned and so forth. See Anselin's book was: "https://spatial.uchicago.edu" "/sites/spatial.uchicago.edu/files/1_introandreview_reducedsize.pdf" for an example.
Arguments
- nb
A neighbor list object as created by
st_contiguity().- order
The order of neighbors.
Details
Utilizes spdep::nblag()
See also
Other other:
st_cardinalties(),
st_nb_lag_cumul()
Examples
nb <- st_contiguity(sf::st_geometry(guerry))
st_nb_lag(nb, 3)
#> Neighbour list object:
#> Number of regions: 85
#> Number of nonzero links: 988
#> Percentage nonzero weights: 13.67474
#> Average number of links: 11.62353