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GeoJson格式GeoJSON是一种对各种地理数据结构进行编码的格式，基于Javascript对象表示法的地理空间信息数据交换格式。GeoJSON对象可以表示几何、特征或者特征集合。GeoJSON支持下面几何类型：点、线、面、多点、多线、多面和几何集合。GeoJSON里的特征包含一个几何对象和其他属性，特征集合表示一系列特征。{ "type": "FeatureCollection",...

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