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# stopRelativeAltitudeUpdates()

Stops the delivery of relative altitude data for the altimeter object.

```
func stopRelativeAltitudeUpdates()
```

## Discussion

Calling this method ends the delivery of relative altitude events and releases the references to the operation queue and block that you specified in the [`startRelativeAltitudeUpdates(to:withHandler:)`](/documentation/CoreMotion/CMAltimeter/startRelativeAltitudeUpdates(to:withHandler:)) method. If you haven’t started delivering data, or if you’ve already called [`stopRelativeAltitudeUpdates()`](/documentation/CoreMotion/CMAltimeter/stopRelativeAltitudeUpdates()), this method does nothing.

---

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