1.canva
http://www.w3school.com.cn/tags/canvas_drawimage.asp
2.gdal
http://download.osgeo.org/gdal/2.4.0/
https://blog.csdn.net/u013929284/article/details/52732910
3.地理数据格式转换（geojson、kml等）
https://blog.csdn.net/u013929284/article/details/52732910
4.百度地图
http://lbsyun.baidu.com/cms/jsapi/reference/jsapi_reference.html#a0b0
5.echarts
http://echarts.baidu.com/tutorial.html#5%20%E5%88%86%E9%92%9F%E4%B8%8A%E6%89%8B%20ECharts
6.datav.aliyun地图
http://datav.aliyun.com/tools/atlas/#&lat=33.50475906922609&lng=104.2822265625&zoom=4