compassHeading

A CompassHeading object is returned to the [compassSuccess](compassSuccess.html) callback function.

Properties

• magneticHeading: The heading in degrees from 0-359.99 at a single moment in time. (Number)

• trueHeading: The heading relative to the geographic North Pole in degrees 0-359.99 at a single moment in time. A negative value indicates that the true heading can't be determined. (Number)

• headingAccuracy: The deviation in degrees between the reported heading and the true heading. (Number)

• timestamp: The time at which this heading was determined. (milliseconds)

Description

The CompassHeading object is returned to the [compassSuccess](compassSuccess.html) callback function.

Amazon Fire OS Quirks

• trueHeading is not supported, but reports the same value as magneticHeading

• headingAccuracy is always 0 because there is no difference between the magneticHeading and trueHeading

Android Quirks

• The trueHeading property is not supported, but reports the same value as magneticHeading.

• The headingAccuracy property is always 0 because there is no difference between the magneticHeading and trueHeading.

iOS Quirks

• The trueHeading property is only returned for location services enabled via navigator.geolocation.watchLocation().

• For iOS 4 devices and above, heading factors in the device's current orientation, and does not reference its absolute position, for apps that supports that orientation.