Conversión de grados decimales a grados, minutos, segundos, décimas.

Solución:

Aquí hay una clase que hice hace tiempo.

public class SexagesimalAngle
{
    public bool IsNegative { get; set; }
    public int Degrees { get; set; }
    public int Minutes { get; set; }
    public int Seconds { get; set; }
    public int Milliseconds { get; set; }



    public static SexagesimalAngle FromDouble(double angleInDegrees)
    {
        //ensure the value will fall within the primary range [-180.0..+180.0]
        while (angleInDegrees < -180.0)
            angleInDegrees += 360.0;

        while (angleInDegrees > 180.0)
            angleInDegrees -= 360.0;

        var result = new SexagesimalAngle();

        //switch the value to positive
        result.IsNegative = angleInDegrees < 0;
        angleInDegrees = Math.Abs(angleInDegrees);

        //gets the degree
        result.Degrees = (int)Math.Floor(angleInDegrees);
        var delta = angleInDegrees - result.Degrees;

        //gets minutes and seconds
        var seconds = (int)Math.Floor(3600.0 * delta);
        result.Seconds = seconds % 60;
        result.Minutes = (int)Math.Floor(seconds / 60.0);
        delta = delta * 3600.0 - seconds;

        //gets fractions
        result.Milliseconds = (int)(1000.0 * delta);

        return result;
    }



    public override string ToString()
    {
        var degrees = this.IsNegative
            ? -this.Degrees
            : this.Degrees;

        return string.Format(
            "{0}° {1:00}' {2:00}"",
            degrees,
            this.Minutes,
            this.Seconds);
    }



    public string ToString(string format)
    {
        switch (format)
        {
            case "NS":
                return string.Format(
                    "{0}° {1:00}' {2:00}".{3:000} {4}",
                    this.Degrees,
                    this.Minutes,
                    this.Seconds,
                    this.Milliseconds,
                    this.IsNegative ? 'S' : 'N');

            case "WE":
                return string.Format(
                    "{0}° {1:00}' {2:00}".{3:000} {4}",
                    this.Degrees,
                    this.Minutes,
                    this.Seconds,
                    this.Milliseconds,
                    this.IsNegative ? 'W' : 'E');

            default:
                throw new NotImplementedException();
        }
    }
}

Creo que esto debería ser suficiente.

double decimal_degrees; 

// set decimal_degrees value here

double minutes = (decimal_degrees - Math.Floor(decimal_degrees)) * 60.0; 
double seconds = (minutes - Math.Floor(minutes)) * 60.0;
double tenths = (seconds - Math.Floor(seconds)) * 10.0;
// get rid of fractional part
minutes = Math.Floor(minutes);
seconds = Math.Floor(seconds);
tenths = Math.Floor(tenths);

La solución aquí tiene la conversión en ambos sentidos.

double coord = 59.345235;
int sec = (int)Math.Round(coord * 3600);
int deg = sec / 3600;
sec = Math.Abs(sec % 3600);
int min = sec / 60;
sec %= 60;

** De convertir grados / minutos / segundos a coordenadas decimales

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