ST_AsGeoJSON: Returns the geometry as a GeoJSON element. ST_AsGML: Returns the geometry as a GML version 2 or 3 element. ST_AsKML: Returns the geometry as a KML element. Several variants. Default version=2, default precision=15. ST_AsSVG: Returns a Geo...
st_asgeojson(geometry) geometry转geojson: st_geomfromgeojson(geojson) geojson转geometry st_transform(geometry, integer) 坐标转换 6.常用空间关系判断函数 st_equals(geometryA, geometryB) 相等(Equals)--几何形状拓扑上相等。 st_disjoint(geometryA, geometryB) 脱节(Disjoint)--几何形状没有共有的点。
select st_asgeojson(geom) geom from building_info where building_id = 84266; //获取几何对象的中心 ST_Centroid(geometry)
--查询空间数据--{"type":"Point","coordinates":[1731428,852776]}SELECTst_asgeojson(geometry)fromadmin_face_alllimit1;--POINT(1731428 852776)selectst_astext(geom)wheretableName; 插入一条空间数据 insertintomytable(geom)values(ST_GeomFromText('POINT(121.5 31.1)',4326)); ...
data}){ // 获得路径数据后，处理成GeoJSON const res = data.routes[0].steps.map(...
SELECT'Feature'Astype,ST_AsGeoJSON(lg.aoi_geom)::jsonAsgeometry,row_to_json((SELECTlFROM(SELECTaoi_name,hn_id)Asl))AspropertiesFROMpoi_hn_aoi lg limit10;selectrow_to_json(t)from(select aoi_name,aoi_id from poi_hn_aoi limit10)t;selectrow_to_json((SELECTlFROM(SELECTaoi_name,aoi_id...
浏览器将会收到一份GeoJSON数据: { "type": "FeatureCollection", "features": [{ "type": "Feature", "id": "shenzhen.fid-61be8e79_172e5251868_-7feb", "geometry": { "type": "LineString", "coordinates": [ [1.267733314942105E7, 2578207.10933218], [1.267731205437755E7, 2578186.95527014], [1....
lwfree(geojson); PG_RETURN_TEXT_P(result); } 开发者ID:gravitystorm,项目名称:postgis,代码行数:70,代码来源:geography_inout.c 示例3: gin_consistent_jsonb ▲点赞 4▼ Datumgin_consistent_jsonb(PG_FUNCTION_ARGS){bool*check = (bool*) PG_GETARG_POINTER(0); ...
publicGeometryread(byte[] bytes)throwsParseException{...} 解析完的结果如下: 可以看到,geom字段的值已经变成了我们的空间对象字符串。 7.空间分析 获取到空间对象后,可以进行一系列的空间分析操作,此处不再赘述,请参考另一文档。 简介 利用SpringBoot+Mabatis-Plus+Maven+Postgres+PostGIS+GeoTool搭建GIS空间分析...