一、原理
首先设置地图为二维模式
<map name="ArcGIS Online" type="projected" version="2">
然后在options里面设置投影方式为Equirectangular projection(ERP)
<profile>eqc-wgs84</profile>
二、地图代码
clear_2D.earth
<!--设置二维模式-->
<map name="ArcGIS Online" type="projected" version="2">
<image name="arcgis-world-imagery" driver="arcgis">
<url>http://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/</url>
<nodata_image>http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer/tile/100/0/0.jpeg</nodata_image>
<cache_policy usage="read_write"/>
</image>
<image name="arcgis-transportation" driver="arcgis" enabled="false">
<url>http://services.arcgisonline.com/ArcGIS/rest/services/Reference/World_Transportation/MapServer</url>
<cache_policy usage="read_write"/>
</image>
<image name="arcgis-reference-overlay" driver="arcgis" enabled="false">
<url>http://services.arcgisonline.com/ArcGIS/rest/services/Reference/World_Boundaries_and_Places_Alternate/MapServer</url>
<cache_policy usage="read_write"/>
</image>
<options>
<!--Specify where to cache the data-->
<terrain driver="rex"/>
<profile>eqc-wgs84</profile>
<cache type="filesystem">
<path>./data</path>
</cache>
</options>
</map>
三、结果展示
近处也可以清晰看到