atan2()

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

Syntax

atan2(y,x)

Parameters

Returns

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

Examples

The following example returns the angle measurements in radians.

print atan2_0 = atan2(1,1) // Pi / 4 radians (45 degrees)
| extend atan2_1 = atan2(0,-1) // Pi radians (180 degrees)
| extend atan2_2 = atan2(-1,0) // - Pi / 2 radians (-90 degrees)

Output