This network is of contiguity between US states. States that share a border are connected by a tie in the network. The data is a network of 107 ties among 50 US states (nodes). States are named by their two-letter ISO-3166 code. This data includes also the names of the capitol cities of each state, which are listed in the node attribute 'capitol'.

data(ison_usstates)

Format

#> # A labelled, undirected network of 50 nodes and 107 ties
#> # A tibble: 50 x 3
#>   name  capitol     population
#>   <chr> <chr>            <int>
#> 1 AK    Juneau              NA
#> 2 AL    Montgomery     4780127
#> 3 AR    Little Rock    2915958
#> 4 AZ    Phoenix        6392307
#> 5 CA    Sacramento    37252895
#> 6 CO    Denver         5029324
#> # i 44 more rows
#> # A tibble: 107 x 2
#>    from    to
#>   <int> <int>
#> 1     2     9
#> 2     2    10
#> 3     2    25
#> 4     2    42
#> 5     3    18
#> 6     3    24
#> # i 101 more rows

References

Meghanathan, Natarajan. 2017. "Complex network analysis of the contiguous United States graph." Computer and Information Science, 10(1): 54-76. doi:10.5539/cis.v10n1p54