D3 tree map

D3 tree map

D3 矩形树图

https://www.zhihu.com/question/55529379

https://zhuanlan.zhihu.com/p/57873460

https://www.bbsmax.com/A/A2dmYln4de/

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bug ???

rectangle map chart js

https://minimaxir.com/2015/01/tree-time/

https://stackoverflow.com/questions/52199459/d3-js-map-chart-draw-rectangle

https://developers.google.com/maps/documentation/javascript/examples/rectangle-simple

https://www.syncfusion.com/javascript-ui-controls/js-maps

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