<!--
{
  "availability" : [
    "iOS: 12.0.0 -",
    "iPadOS: 12.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.14.0 -",
    "tvOS: 12.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Vision",
  "identifier" : "/documentation/Vision/VNFaceObservation/yaw",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Vision"
    ],
    "preciseIdentifier" : "c:objc(cs)VNFaceObservation(py)yaw"
  },
  "title" : "yaw"
}
-->

# yaw

The yaw angle of a face in radians.

```
var yaw: NSNumber? { get }
```

## Discussion

This value indicates the rotational angle of the face around the y-axis.

If the request doesn’t calculate the angle, the value is `nil.`

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)