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# init(requestRevision:boundingBox:roll:yaw:pitch:)

Creates an observation that contains the roll, yaw, and pitch of the face.

```
convenience init(requestRevision: Int, boundingBox: CGRect, roll: NSNumber?, yaw: NSNumber?, pitch: NSNumber?)
```

## Parameters

`requestRevision`

The revision of the request.

`boundingBox`

The bounding rectangle of the detected face landmark.

`roll`

The rotational angle of the face landmark around the z-axis.

`yaw`

The rotational angle of the face landmark around the y-axis.

`pitch`

The rotational angle of the face landmark around the x-axis.

## Discussion

---

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