suggest_neighbors: Suggest Neighbors for Lonely Precincts

In christopherkenny/geomander: Geographic Tools for Studying Gerrymandering

Suggest Neighbors for Lonely Precincts

Description

For precincts which have no adjacent precincts, this suggests the nearest precinct as a friend to add. This is useful for when a small number of precincts are disconnected from the remainder of the geography, such as an island.

Usage

suggest_neighbors(shp, adj, idx, neighbors = 1)

Arguments

shp	an sf shapefile
adj	an adjacency list
idx	Optional. Which indices to suggest neighbors for. If blank, suggests for those with no neighbors.
neighbors	number of neighbors to suggest

Value

tibble with two columns of suggested rows of shp to connect in adj

Examples

library(dplyr)
data(va18sub)
va18sub <- va18sub %>% filter(!VTDST %in% c('000516', '000510', '000505', '000518'))
adj <- adjacency(va18sub)
suggests <- suggest_neighbors(va18sub, adj)
adj <- adj %>% add_edge(v1 = suggests$x, v2 = suggests$y)

christopherkenny/geomander documentation built on Feb. 18, 2024, 7:58 p.m.