Coordinates interface represents the position and altitude of the device on Earth, as well as the accuracy with which these properties are calculated.
double representing the velocity of the device in meters per second. This value can be
double representing the direction in which the device is traveling. This value, specified in degrees, indicates how far off from heading true north the device is.
0 degrees represents true north, and the direction is determined clockwise (which means that east is
90 degrees and west is
270 degrees). If
NaN. If the device is unable to provide
heading information, this value is
double representing the accuracy of the
altitude expressed in meters. This value can be
double representing the position's altitude in meters, relative to sea level. This value can be
null if the implementation cannot provide the data.