A symmetric distance matrix containing approximate road (driving) distances in kilometres between all 37 Nigerian State capitals (including Abuja for the Federal Capital Territory).
Format
An object of class dist with 37 labels — one for each
State capital. The labels are city names in title case (e.g.
"Lagos", "Port Harcourt").
Details
The matrix holds \(37 \times 36 / 2 = 666\) unique pairwise distances. Values are sourced from UNDP and represent typical road travel; actual distances may vary with route choice, road conditions, or detours.
For a convenient way to look up individual distances, see
ng_distance.
See also
ng_distance for querying a single pair of cities.
Examples
data(ngdist)
labels(ngdist) # city names
#> [1] "Abakaliki" "Abeokuta" "Abuja" "Ado-Ekiti"
#> [5] "Akure" "Asaba" "Awka" "Bauchi"
#> [9] "Benin City" "Birnin Kebbi" "Calabar" "Damaturu"
#> [13] "Dutse" "Enugu" "Gombe" "Gusau"
#> [17] "Ibadan" "Lagos" "Ilorin" "Jalingo"
#> [21] "Jos" "Kaduna" "Kano" "Katsina"
#> [25] "Lafia" "Lokoja" "Maiduguri" "Makurdi"
#> [29] "Minna" "Osogbo" "Owerri" "Port Harcourt"
#> [33] "Sokoto" "Umuahia" "Uyo" "Yenagoa"
#> [37] "Yola"
as.matrix(ngdist)[1:5, 1:5]
#> Abakaliki Abeokuta Abuja Ado-Ekiti Akure
#> Abakaliki 0 656 477 566 506
#> Abeokuta 656 0 722 340 200
#> Abuja 477 722 0 450 420
#> Ado-Ekiti 566 340 450 0 60
#> Akure 506 200 420 60 0