echarts - geo 绘制无数据区域的区域

1、获取geo

http://datav.aliyun.com/tools/atlas/#&lat=31.30084828737045&lng=120.92308044433594&zoom=10

2、绘制Polygon （比较烦）

http://geojson.io/#map=12/31.4401/120.9638

3、导出Polygon json

4、导入json 并生成echarts encode

http://blog.giscafer.com/mapshaper-plus/