atan2()atan2()

• 10/29/2020
• • o
  • v

计算正 x 轴与从原点到点 (y, x) 的射线之间的角度（以弧度表示）。Calculates the angle, in radians, between the positive x-axis and the ray from the origin to the point (y, x).

语法Syntax

atan2(y,x)atan2(y,x)

参数Arguments

• x：X 坐标（实数）。x : X coordinate (a real number).
• y：Y 坐标（实数）。y : Y coordinate (a real number).

返回Returns

• 正 x 轴与从原点到点 (y, x) 的射线之间的角度（以弧度表示）。The angle, in radians, between the positive x-axis and the ray from the origin to the point (y, x).

示例Examples

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)