Instance Property


The change in altitude (in meters) since the first reported event.


@property(readonly, nonatomic) NSNumber *relativeAltitude;


For the first altitude event delivered to your altimeter object, the value of this property is 0. Subsequent events contain a number that reflects the relative change in altitude with respect to the first reported event. For example, if the altitude changed five meters between the first and second events, the value in this property is 5 for the second event.

See Also

Getting the Altitude Data


The recorded pressure, in kilopascals.