Calculates a bearing (in degrees) between two geodetic coordinates on the surface of the user defined reference ellipsoid.

Parameters

semiMajorAxisAInM

a semi major axis A (in meters) of the user defined reference ellipsoid

inverseFlattening

an inverse flattening of the user defined reference ellipsoid

latInDeg1

the latitude (in decimal degrees) of the first geodetic coordinate

lonInDeg1

the longitude (in decimal degrees) of the first geodetic coordinate

latInDeg2

the latitude (in decimal degrees) of the second geodetic coordinate

lonInDeg2

the longitude (in decimal degrees) of the second geodetic coordinate

bearingInDeg

the calculated distance (in meters), passed by reference (out)

errorMessage

an error message, passed by reference (out), that contains detailed error / warning information

Return Value

true - the function has succeeded, false - it has failed

Remarks

The function verifies validity of its arguments.

Example

This sample shows how to call the Geodetic.CalculateBearingInDeg method from C# code:

 double semiMajorAxisA = 6378137;
 double inverseFlattening = 298.257223563;

 string errorMessage = String.Empty;
 
 double latInDeg = 38.889139;
 double lonInDeg = -77.049;
 double latInDeg2 = 39.889139;
 double lonInDeg2 = -78.049;
 
 double bearingInDeg = Double.NaN;
 
 if (Geodetic.CalculateBearingInDeg(semiMajorAxisA, inverseFlattening, latInDeg1, lonInDeg1, latInDeg2, lonInDeg2, out bearingInDeg, out errorMessage))
 {
     Console.WriteLine("Bearing, in degrees: " + bearingInDeg.ToString());
 }
 else
 {
     Console.WriteLine(errorMessage);
 }
 

See Also

Geodetic Class | ApsGis Namespace | Geodetic.CalculateBearingInDeg Overload List