A small undirected igraph network of 20 European capitals and major
cities, with made-up transport links between them. Useful for trying out
plot_staticmap() at a continental scale.
Format
An igraph object with 20 vertices and 29 edges.
Vertex attributes:
- name, site
City name.
- country
Country the city is in.
- region
Broad region: "West", "South", "Central", "East" or "North".
- lat, long
Latitude and longitude in decimal degrees.
- population
Approximate city-proper population, in millions.
Edge attributes:
- edge_type
Type of link: "rail", "road", "ferry" or "air".
- weight
Made-up number of connections per week.
Source
Coordinates and populations are approximate; links and weights
are invented for illustration. See data-raw/europe_network.R.
Examples
igraph::vertex_attr(europe_network, "site")
#> [1] "London" "Paris" "Amsterdam" "Brussels" "Dublin"
#> [6] "Madrid" "Lisbon" "Barcelona" "Rome" "Milan"
#> [11] "Athens" "Berlin" "Munich" "Vienna" "Prague"
#> [16] "Warsaw" "Budapest" "Copenhagen" "Stockholm" "Oslo"