ES|QL `ATAN2` function

Syntax

Embedded

Parameters

y_coordinate: y coordinate. If null, the function returns null.
x_coordinate: x coordinate. If null, the function returns null.

Description

The angle between the positive x-axis and the ray from the origin to the point (x , y) in the Cartesian plane, expressed in radians.

Supported types

y_coordinate	x_coordinate	result
double	double	double
double	integer	double
double	long	double
double	unsigned_long	double
integer	double	double
integer	integer	double
integer	long	double
integer	unsigned_long	double
long	double	double
long	integer	double
long	long	double
long	unsigned_long	double
unsigned_long	double	double
unsigned_long	integer	double
unsigned_long	long	double
unsigned_long	unsigned_long	double

Example

		ROW y=12.9, x=.6
| EVAL atan2=ATAN2(y, x)

y:double	x:double	atan2:double
12.9	0.6	1.5243181954438936