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. 2011 Jan 7;6(1):e15923. doi: 10.1371/journal.pone.0015923

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Roth et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Inline graphic — When considering the most important flows from stations to centers such their sum represents of the total flow in the network, we observe sources (represented as squares) with outdegree such as London Bridge, Stratford, or Waterloo connecting to three different centers (represented as circles), as well as sources with (eg. Victoria) and (eg. Elephant and Castle). We also show how the pattern of flows is constructed iteratively when we go to larger fraction of the total flow (from shown in black to shown in red). We represent in red the new sources, centers and connections. The new sources connect to the older centers (eg. West End, City, etc) and the existing sources (eg. Victoria) connect to new centers (eg. Northern stations, Museums, and Parliament).

Inline graphic — When considering the most important flows from stations to centers such their sum represents of the total flow in the network, we observe sources (represented as squares) with outdegree such as London Bridge, Stratford, or Waterloo connecting to three different centers (represented as circles), as well as sources with (eg. Victoria) and (eg. Elephant and Castle). We also show how the pattern of flows is constructed iteratively when we go to larger fraction of the total flow (from shown in black to shown in red). We represent in red the new sources, centers and connections. The new sources connect to the older centers (eg. West End, City, etc) and the existing sources (eg. Victoria) connect to new centers (eg. Northern stations, Museums, and Parliament).