Reduce Adjacency List

Tool to help reduce adjacency lists for analyzing subsets of maps.

redist.reduce.adjacency(adj, keep_rows)

Arguments

adj

A zero-indexed adjacency list. Required.

keep_rows

row numbers of precincts to keep

Value

zero indexed adjacency list with max value length(keep_rows) - 1

Examples

data(fl25_adj)
redist.reduce.adjacency(fl25_adj, c(2, 3, 4, 6, 21))
#> [[1]]
#> [1] 2 4
#> 
#> [[2]]
#> [1] 2 3 4
#> 
#> [[3]]
#> [1] 0 1 4
#> 
#> [[4]]
#> [1] 1
#> 
#> [[5]]
#> [1] 0 1 2
#>