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Get neighbours list from spatial objects

Source: R/map_coloring.R
get_neighbours.Rd

Get neighbours list from spatial objects. The output is similar to the function poly2nb of the spdep package with queen = FALSE, but uses sf instead of sp. Two polygons are considered neighbours only when their boundaries share a line segment (an edge), not merely a point.

Usage

get_neighbours(x)

Arguments

x

a shape object, i.e., a sf object or a SpatialPolygons(DataFrame) (sp package).

Value

A list where the items correspond to the features. Each item is a vector of neighbours.