seam_adj: Filter Adjacency to Edges Along Border

In geomander: Geographic Tools for Studying Gerrymandering

Filter Adjacency to Edges Along Border

Description

Filter Adjacency to Edges Along Border

Usage

seam_adj(adj, shp, admin, seam, epsg = 3857)

Arguments

adj	zero indexed adjacency graph
shp	tibble to subset and where admin column is found
admin	quoted name of administrative unit column
seam	administrative units to filter by
epsg	numeric EPSG code to planarize to. Default is 3857.

Value

subset of adj

Examples

data('rockland')
data('orange')
data('nrcsd')

o_and_r <- rbind(orange, rockland)
o_and_r <- o_and_r %>%
  geo_filter(nrcsd) %>%
  geo_trim(nrcsd)
adj <- adjacency(o_and_r)

seam_adj(adj, shp = o_and_r, admin = 'county', seam = c('071', '087'))

geomander documentation built on April 16, 2023, 5:18 p.m.