Instance Property


The maximum deviation (measured in degrees) between the reported heading and the true geomagnetic heading.


@property(readonly, nonatomic) CLLocationDirection headingAccuracy;


A positive value in this property represents the potential error between the value reported by the magneticHeading property and the actual direction of magnetic north. Thus, the lower the value of this property, the more accurate the heading. A negative value means that the reported heading is invalid, which can occur when the device is uncalibrated or there is strong interference from local magnetic fields.

See Also

Accessing the Heading Attributes


The heading (measured in degrees) relative to magnetic north.


The heading (measured in degrees) relative to true north.


The time at which this heading was determined.