我有2个纬度格式的坐标。

如何确定从点A(例如纽约37.149472,-95.509544)到点B的方向(例如多伦多40.714269,-74.005973)

我正在寻找“340度”之类的值

在C#中

最佳答案

如果您希望跟随恒定的方位角,那么就不需要最短的(大圆)路径,而需要Rhumb线

为此的可移动类型脚本的转换

static double DegreeBearing(
    double lat1, double lon1,
    double lat2, double lon2)
{
    var dLon = ToRad(lon2-lon1);
    var dPhi = Math.Log(
        Math.Tan(ToRad(lat2)/2+Math.PI/4)/Math.Tan(ToRad(lat1)/2+Math.PI/4));
    if (Math.Abs(dLon) > Math.PI)
        dLon = dLon > 0 ? -(2*Math.PI-dLon) : (2*Math.PI+dLon);
    return ToBearing(Math.Atan2(dLon, dPhi));
}

public static double ToRad(double degrees)
{
    return degrees * (Math.PI / 180);
}

public static double ToDegrees(double radians)
{
    return radians * 180 / Math.PI;
}

public static double ToBearing(double radians)
{
    // convert radians to degrees (as bearing: 0...360)
    return (ToDegrees(radians) +360) % 360;
}

// verify against the website example
DegreeBearing(50.36389,-4.15694,42.35111,-71.04083);

关于c# - C#中2个纬度/经度点之间的方向,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/2042599/

10-12 07:36
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