最近在研究leafletjs地图框架，发现在地图这块功能还是强大，而且支持插件扩展和自定义开发。虽然leafletjs源码很小，功能精简，但是框架优势在于，插件自定义开发和扩展这部分设计，而且开源。
http://ursudio.com/webgl-heatmap-leaflet/
20、加载echarts图（聚合图、迁徙图、热力图）（非常实用）
https://github.com/wandergis/leaflet-echarts.git
21、要素编辑（面合并、分割、创建要素等）（结合leaflet.wfst）(非常实用)
https://github.com/Leaflet/Leaflet.toolbar
https://github.com/Leaflet/Leaflet.draw
https://github.com/Leaflet/Leaflet.Editable
https://github.com/codeofsumit/leaflet.pm
https://github.com/willfarrell/Leaflet.Clipper
22、图层切换，要素显示隐藏
https://github.com/ismyrnow/leaflet-groupedlayercontrol
23、地图导航条、全屏控件
https://github.com/turbo87/sidebar-v2/
https://github.com/kartena/Leaflet.Pancontrol
https://github.com/kartena/Leaflet.zoomslider
https://github.com/Leaflet/Leaflet.fullscreen
https://github.com/brunob/leaflet.fullscreen
24、鹰眼图
https://github.com/Norkart/Leaflet-MiniMap
25、测量控件
https://github.com/ljagis/leaflet-measure
26、控件按钮样式设置
https://github.com/CliffCloud/Leaflet.EasyButton
https://github.com/aratcliffe/Leaflet.contextmenu
27、地图打印插件
https://github.com/rowanwins/leaflet-easyPrint
https://github.com/Igor-Vladyka/leaflet.browser.print
28、定位当前位置
https://github.com/domoritz/leaflet-locatecontrol
29、坐标转换插件（与缓冲区、测量配合使用）（非常实用）
https://github.com/kartena/Proj4Leaflet
30、空间位置分析（非常实用）
（点是否在面内）https://github.com/kartena/Proj4Leaflet
（计算面积、距离）https://github.com/makinacorpus/Leaflet.GeometryUtil/blob/master/src/leaflet.geometryutil.js
31、路径分析（纠偏，地图匹配算法）
https://github.com/perliedman/leaflet-routing-machine
https://github.com/Project-OSRM/osrm-frontend
32、poi模糊查询
https://github.com/smeijer/leaflet-geosearch
https://github.com/perliedman/leaflet-control-geocoder
33、等势线、等势面
https://github.com/timwis/leaflet-choropleth