ST_Angle_Sphere

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

mysql> select ST_Angle_Sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219);
+---------------------------------------------------------------------------+
| st_angle_sphere(116.35620117, 39.939093, 116.4274406433, 39.9020987219) |
+---------------------------------------------------------------------------+
|                                                        0.0659823452409903 |
+---------------------------------------------------------------------------+
1 row in set (0.06 sec)

mysql> select ST_Angle_Sphere(0, 0, 45, 0);
+----------------------------------------+
| st_angle_sphere(0.0, 0.0, 45.0, 0.0) |
+----------------------------------------+
|                                     45 |
+----------------------------------------+
1 row in set (0.06 sec)

keywords

ST_ANGLE_SPHERE,ST,ANGLE,SPHERE