Fig. 7
From: Multi-modal and multi-layer robustness analysis of the European rail and air networks
Representation of studied networks. From right to left: Rail, Air, and Multi-Modal. Nodes, depicted as blue dots, represent a set of 124 main metropolitan areas spanning 34 countries which have been selected based on population size and significance (e.g., capital cities). The set of nodes is identical for all networks. The rail network consists of 257 edges. The air network is composed of 5173 edges. The inclusion of an edge implies the presence of at least a weekly service traversing this edge. The multi-modal network has a total of 5430 links, providing a comprehensive view on how considered metropolitan areas are connected through both rail and air transportation networks. (Maps are created using Matplotlib and Basemap https://matplotlib.org/basemap/stable/).
