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| |
| # ST_DistanceSpheroid |
| |
| Introduction: Return the geodesic distance of A using WGS84 spheroid. Unit is meter. Compared to `ST_Distance` + `ST_Transform`, it works better for datasets that cover large regions such as continents or the entire planet. It is equivalent to PostGIS `ST_Distance(geography, use_spheroid=true)` and `ST_DistanceSpheroid` function and produces nearly identical results. It provides slower but more accurate result compared to `ST_DistanceSphere`. |
| |
| Geometry must be in EPSG:4326 (WGS84) projection and must be in ==lon/lat== order. You can use ==ST_FlipCoordinates== to swap lat and lon. For non-point data, we first take the centroids of both geometries and then compute the distance. |
| |
| !!!note |
| By default, this function uses lon/lat order since `v1.5.0`. Before, it used lat/lon order. |
| |
|  |
| |
| Format: `ST_DistanceSpheroid (A: Geometry)` |
| |
| Return type: `Double` |
| |
| Since: `v1.4.1` |
| |
| SQL Example |
| |
| ```sql |
| SELECT ST_DistanceSpheroid(ST_GeomFromWKT('POINT (-0.56 51.3168)'), ST_GeomFromWKT('POINT (-3.1883 55.9533)')) |
| ``` |
| |
| Output: |
| |
| ``` |
| 544430.9411996207 |
| ``` |
