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atan2()
Applies to: ✅ Microsoft Fabric ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel
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)
Learn more about syntax conventions.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| y | real |
✔️ | The Y coordinate. |
| x | real |
✔️ | The X coordinate. |
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
| atan2_0 | atan2_1 | atan2_2 |
|---|---|---|
| 0.785398163397448 | 3.14159265358979 | -1.5707963267949 |