Make 'nb' objects from point geometries — ww_make_point_neighbors • waywiser

This function uses spdep::knearneigh() and spdep::knn2nb() to create a "nb" neighbors list.

Usage

ww_make_point_neighbors(data, k = 1, sym = FALSE, ...)

Arguments

data: An sfc_POINT or sfc_MULTIPOINT object.
k: How many nearest neighbors to use in spdep::knearneigh().
sym: Force the output neighbors list (from spdep::knn2nb()) to symmetry.
...: Other arguments passed to spdep::knearneigh().

Value

An object of class "nb"

Details

These functions can be used for geographic or projected coordinate reference systems and expect 2D data.

Examples

ww_make_point_neighbors(ny_trees)
#> Warning: neighbour object has 1712 sub-graphs
#> Neighbour list object:
#> Number of regions: 5303 
#> Number of nonzero links: 5303 
#> Percentage nonzero weights: 0.01885725 
#> Average number of links: 1 
#> 1712 disjoint connected subgraphs
#> Non-symmetric neighbours list