GeoJSON
是一种基于 JSON
的用于存储地理信息的数据格式。其可以表示几何特征或者特征集合,支持点、线、面、多点、多线、多面以及几何集合
GeoJSON
里的特征包含一个 几何对象
和 扩展对象
,特征集合表示一系列特征
特征对象
- 表示 Point 单个点
{ "type": "Feature", "properties": {}, "geometry": { "type": "Point", "coordinates": [125.6, 10.1], } }
- 表示 LineString 单条线
{ "type": "Feature", "properties": {}, "geometry": { "type": "LineString", "coordinates": [ [30, 10], [10, 30], [40, 40] ], } }
- 表示 Polygon 单个面
{ "type": "Feature", "properties": {}, "geometry": { "type": "Polygon", "coordinates": [ [ [-67.13734, 45.13745], [-66.96466, 44.8097], [-68.03252, 44.3252], [-69.06, 43.98], [-70.11617, 43.68405], [-70.64573, 43.09008], [-70.75102, 43.08003], [-70.79761, 43.21973], [-70.98176, 43.36789], [-70.94416, 43.46633], [-71.08482, 45.30524], [-70.66002, 45.46022], [-70.30495, 45.91479], [-70.00014, 46.69317], [-69.23708, 47.44777], [-68.90478, 47.18479], [-68.2343, 47.35462], [-67.79035, 47.06624], [-67.79141, 45.70258], [-67.13734, 45.13745] ] ], } }
- 表示 MultiPoint 多个点
{ "type": "Feature", "properties": {}, "geometry": { "type": "MultiPoint", "coordinates": [ [-121.415061, 40.506229], [-121.354465, 40.488737] ], } }
- 表示 MultiLineString 多条线
{ "type": "Feature", "properties": {}, "geometry": { "type": "MultiLineString", "coordinates": [ [[10, 10], [20, 20], [10, 40]], [[40, 40], [30, 30], [40, 20], [30, 10]] ], } }
- 表示 MultiPolygon 多个面
通过{ "type": "Feature", "properties": {}, "geometry": { "type": "MultiPolygon", "coordinates": [ [ [-67.13734, 45.13745], [-66.96466, 44.8097], [-68.03252, 44.3252], [-69.06, 43.98], [-70.11617, 43.68405], [-70.64573, 43.09008], [-70.75102, 43.08003], [-70.79761, 43.21973], ], [ [-70.30495, 45.91479], [-70.00014, 46.69317], [-69.23708, 47.44777], [-68.90478, 47.18479], [-68.2343, 47.35462], [-67.79035, 47.06624], [-67.79141, 45.70258], [-67.13734, 45.13745] ] ], } }
properties
扩展对象可以设置自定义数据,便于业务处理
特征集合
-
集合描述
示例:表示包含一个面和两个点的特征集合
-
数据结构
{ "type": "FeatureCollection", "properties": {}, "features": [ { "type": "Feature", "geometry": { "type": "Polygon", "coordinates": [ [ [-121.353637, 40.584978], [-121.284551, 40.584758], [-121.275349, 40.541646], [-121.246768, 40.541017], [-121.251343, 40.423383], [-121.32687, 40.423768], [-121.360619, 40.43479], [-121.363694, 40.409124], [-121.439713, 40.409197], [-121.439711, 40.423791], [-121.572133, 40.423548], [-121.577415, 40.550766], [-121.539486, 40.558107], [-121.520284, 40.572459], [-121.487219, 40.550822], [-121.446951, 40.56319], [-121.370644, 40.563267], [-121.353637, 40.584978] ] ] } }, { "type": "Feature", "properties": {}, "geometry": { "type": "Point", "coordinates": [-121.415061, 40.506229] } }, { "type": "Feature", "properties": {}, "geometry": { "type": "Point", "coordinates": [-121.505184, 40.488084] } } ] }
数据生成工具
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范围选择器
数据来源于高德,用于下载行政区划的边界数据,最小粒度到区级
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工具地址