Checks if the provided longitude (in decimal degrees) is valid, i.e. if it can be used in GIS calculations in the Mercator projection.

Parameters

lonInDeg

a longitude (in decimal degrees) to validate

errorMessage

an error message, passed by reference (out), that contains detailed information in case of the invalid longitude

Return Value

true - if the longitude is valid, false - if the longitude is invalid

Remarks

The valid longitude is a real number in the range from -180.0 (inclusive) to 180.0 (inclusive).

Example

This sample shows how to call the Mercator.IsValidLongitudeInDeg method from C# code:

string errorMessage = String.Empty;
double lonInDeg = 78.0;
            
if (Mercator.IsValidLongitudeInDeg(lonInDeg, out errorMessage))
{
    Console.WriteLine("Longitude is valid.");
}
else
{
    Console.WriteLine(errorMessage);
}

See Also

Mercator Class | ApsGis Namespace