如何在PostGIS中获取与给定圆相交的所有圆？

Question

我试图找出与给定圆相交或重叠的数据库中存储的所有圆圈（圆圈遍布世界各地）。我已经存储了这样的圈子：

CREATE TABLE circles(gid serial PRIMARY KEY, name varchar, code integer, the_geog geography(POLYGON,4326) );

INSERT INTO circles (gid, name, code, the_geog) VALUES (1,"hello", 11,geometry(ST_Buffer(geography(ST_GeomFromText('POINT(48.732084 -3.459144)')), 1000)));

现在，当我试图查找与给定圈子相交的所有圈子时，我收到此错误：

ERROR:  Only lon/lat coordinate systems are supported in geography.

我使用此查询获取数据：

select * from circles where st_intersects (circles.the_geog,ST_Buffer(ST_Transform(ST_GeomFromText('POINT(-105.04428 39.74779)', 4326), 2877), 1500));

谁能告诉我我做错了什么？

Answer 1

我通过使用：

来实现这一目标

select * from circles where st_intersects (circles.the_geog,geometry(ST_Buffer(geography(ST_GeomFromText('POINT(13.28527 52.521711)')), 1000)));