看作者发的post里说这图好像是用R画的呀 .. 很好很强大 .. 虽然为了做出这个效果用了tons of tricks .. [s:11]
他的这段话点出了这图的真正意义所在:
What really struck me, though, was knowing that the lines didn't represent coasts or rivers or political borders, but real human relationships. Each line might represent a friendship made while travelling, a family member abroad, or an old college friend pulled away by the various forces of life.
作者要是能把数据匿名化以后共享出来就好了 ..