我们在项目中往往需要用echarts或者其他可视化工具来生成地图，一般县级以上的很容易找到，但乡镇区划资料匮乏，这就需要去依据数据或者图纸去定制。
定制的方法无非有两种，一种是通过 http://geojson.io 网站上手动绘制乡镇地图，这个需要具备一定的空间地理功底，依据图形去绘制；另一种就是通过其他软件平台绘制的图形（其他格式）转换得到。
www.geojson.io
文件如下：
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可以TB通过定制各区域的json区划划分
