描述

返回两个经纬点之间的最小距离(以米为单位)。使用球形地球和从SRID定义的椭球体派生的半径。比 ST_DistanceSpheroid ，但不太准确。PostGIS 1.5之前的版本仅针对点实施。

可用性：1.5-引入了对除点之外的其他几何类型的支持。以前的版本仅适用于点。

已更改：2.2.0在以前的版本中，这过去称为ST_Distance_Sphere

示例

SELECT round(CAST(ST_DistanceSphere(ST_Centroid(geom), ST_GeomFromText('POINT(-118 38)',4326)) As numeric),2) As dist_meters,
round(CAST(ST_Distance(ST_Transform(ST_Centroid(geom),32611),
                ST_Transform(ST_GeomFromText('POINT(-118 38)', 4326),32611)) As numeric),2) As dist_utm11_meters,
round(CAST(ST_Distance(ST_Centroid(geom), ST_GeomFromText('POINT(-118 38)', 4326)) As numeric),5) As dist_degrees,
round(CAST(ST_Distance(ST_Transform(geom,32611),
                ST_Transform(ST_GeomFromText('POINT(-118 38)', 4326),32611)) As numeric),2) As min_dist_line_point_meters
FROM
        (SELECT ST_GeomFromText('LINESTRING(-118.584 38.374,-118.583 38.5)', 4326) As geom) as foo;
         dist_meters | dist_utm11_meters | dist_degrees | min_dist_line_point_meters
        -------------+-------------------+--------------+----------------------------
                70424.47 |          70438.00 |      0.72900 |                   65871.18

        

另请参阅

ST_Distance, ST_DistanceSpheroid