http://nbremer.github.io/occupationscanvas/
d3学习
http://www.decembercafe.org/demo/relation/ 关系图谱
https://github.com/marmelab/EventDrops
https://github.com/nylen/d3-process-map
https://blog.csaladen.es/f1 circuits/wrc2018.html
https://csaladenes.wordpress.com/2018/02/18/motorsports-asian-pull-and-release/
http://arsexplorer.martinnadal.eu/#35289_Vectorial
http://www.koalastothemax.com/