D3.js sankey (alluvial) diagram

• http://christopheviau.com/d3list/gallery.html#visualizationType=sankey
• Interactive: https://bl.ocks.org/wvengen/2a71af9df0a0655a470d
• Loops: http://bl.ocks.org/cfergus/3956043
• Bi-directional: http://bl.ocks.org/Neilos/584b9a5d44d5fe00f779
• http://www.nytimes.com/interactive/2012/11/02/us/politics/paths-to-the-white-house.html?_r=0
• http://petrdevaikin.com/duma/en/
• Modified Chord: https://www.visualcinnamon.com/2015/08/stretched-chord.html
• Map: http://bl.ocks.org/ilyabo/2209220
• Tree: http://vizuly.io/product/weighted-tree/?demo=d3js