- ST_Distance(geom1, geom2):计算两个几何对象之间的距离 - ST_Contains(geom1, geom2):判断一个几何对象是否包含另一个几何对象 - ST_Within(geom1, geom2):判断一个几何对象是否在另一个几何对象内 以上是一些常见的PostgreSQL空间函数,实际上PostgreSQL和其扩展PostGIS提供了更多的空间函数,具体使用哪些函数...
SELECT find_polygon_code(ST_GeomFromText('POINT(5 5)', 4326)); 这个查询将返回 'A',因为点 (5, 5) 位于多边形 'A' 内。 这个函数使用PostGIS的ST_Contains函数来检查一个点是否位于一个多边形内。如果找到了包含该点的多边形,它将返回该多边形的编码。如果没有找到,它将抛出一个异常。你可以根据需...
select ST_AsText(geom) 1. 两个几何要素是否相交 ST_Intersects(e.geom, r.geom) 1. 计算两点间的欧式距离 SELECT st_distance(geometry('POINT(115.967054194395 39.7315610991521)')::geography,geometry('POINT(115.96694062267 39.731557951387)')::geography) 1. 判断点是否在面内 ST_Contains(polygon.geom,poin...
FROM city, superhero WHERE ST_Contains(city.geom, superhero.geom) AND city.name = 'Gotham'; In addition to basic location awareness, PostGIS offers many features rarely found in other competing spatial databases such as Oracle Locator/Spatial and SQL Server. 安装 不同系统不同安装方式 不再此处...
判断A是否包含BST_Contains(geometry A, geometry B) 判断A是否覆盖BST_Covers(geometry A, geometry B) 判断A是否被B所覆盖ST_CoveredBy(geometry A, geometry B) 如果需要精确的计算结果,则要做坐标系转换,称为空间投影。例如,以两个空间点的位置,计算两点间的距离。计算结果的单位与你的空间数据的参考系有关...
--UUIDCREATEEXTENSIONpgcrypto;CREATEEXTENSION"uuid-ossp";--EnablePostGIS(asof3.0contains just geometry/geography)--启用PostGIS功能(仅包括geometry/geography相关)CREATEEXTENSIONpostgis;--enable raster support(for3+)--启用栅格扩展CREATEEXTENSIONpostgis_raster;--EnableTopology--启用拓扑扩展CREATEEXTENSIONpostgis...
(It is an indirect dependency of osm2pgsql, so it has to be installed.) The proj package contains a list of projections standardised by the EPSG in /usr/share/proj/epsg. The osm2pgsql option -E allows to choose any of them by number. The projections with dedicated options can also ...
st_geometryfromtext(concat('POINT(', a.lon, ' ', a.lat, ')'),4326) ) 是否包含函数 ST_Contains(geometry1, geometry2) 版权声明:本文为L_sliang原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。 本文链接:https://blog.csdn.net/L_sliang/article/details/121520168 智...
(https://github.com/postgis/docker-postgis) to see if your problem can be reproduced with the latest PostGIS/GDAL/PROJ/GEOS code. The "postgis/postgis:16-master" contains the most recent development codes: POSTGIS="3.5.0dev 3.4.0rc1-829-g4338f0b59" [EXTENSION] PGSQL="160" ...
+ "because the extension contains the schema", + extensionName, newschema))); + + /* + * If the extension is already in the target schema, just silently do + * nothing. + */ + if (extForm->extnamespace == nspOid) + {