Gephi

Spend a beautiful evening getting used to gephi, which means precisely:
• Installed gephi
• Wrote the distance-gravity-network in a excel table (can then be
converted to .csv data, which can be opened by gephi)
• Made a first network with that data
• Download a plug-in for country maps
• Getting used to the country map plug-in
• Combined the network with country map
(quite annoying since it doesn't work when you first great the network…)

Further steps:
Could normalize the network since the map has only weight one which
gives you really thin lines compared to the network lines.