A major part of the scientific communication on networks remains on SOCNET Listserv. That’s where Barry Wellman just asked whether or not someone would be willing to share a database of city-to-city airline routes. Though he’s probably thinking of American routes, I do have a file of German city-to-city routes for Lufthansa that’s gonna be published in an upcoming book by Springer on social networks in tourism.
The file is in Graphviz‘s DOT-format (though it comes as plain text, rename if necessary) and geo-coded. Therefore, the above layout is based on the geographic location of each airport, not some mathematical algorithm. Since I frequently use the network to teach, I might as well share it with the rest of the community.
PS: This is the last post of the year, so … be safe.