ST_Angle_Sphere

description

Syntax

DOUBLE ST_Angle_Sphere(DOUBLE x_lng, DOUBLE x_lat, DOUBLE y_lng, DOUBLE y_lat)

Calculates the central angle between two points on the Earth’s surface. The incoming parameters are the longitude of point X, the latitude of point X, the longitude of point Y and the latitude of point Y.

x_lng and y_lng are Longitude values, must be in the range [-180, 180]. x_lat and y_lat are Latitude values, must be in the range [-90, 90].

example

1. mysql> select ST_Angle_Sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219);
2. +---------------------------------------------------------------------------+
3. | st_angle_sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219) |
4. +---------------------------------------------------------------------------+
5. |                                                        0.0659823452409903 |
6. +---------------------------------------------------------------------------+
7. 1 row in set (0.06 sec)

9. mysql> select ST_Angle_Sphere(0, 0, 45, 0);
10. +----------------------------------------+
11. | st_angle_sphere(0.0, 0.0, 45.0, 0.0) |
12. +----------------------------------------+
13. |                                     45 |
14. +----------------------------------------+
15. 1 row in set (0.06 sec)

keywords

ST_ANGLE_SPHERE,ST,ANGLE,SPHERE