swift - 如何将度分秒和方向转换为经纬度坐标？

Question

我有一个类似以下值的值。我想将这些值转换为经度和纬度坐标。如果可能的话，使用数学运算。

输入:

latitude: 40,58,36, N
longitude: 28,49, 16, E

输出:

latitude: 40.976667
longitude: 28.821111

Answer 1

我不知道是否有内置函数，但这会起作用:

func convert(degrees degrees: Double, minutes: Double, seconds: Double, direction: String) -> Double {
    let sign = (direction == "W" || direction == "S") ? -1.0 : 1.0
    return (degrees + (minutes + seconds/60.0)/60.0) * sign
}


let lattitude = convert(degrees: 40, minutes: 58, seconds: 36, direction: "N")  // 40.9766666666667
let longitude = convert(degrees: 28, minutes: 49, seconds: 16, direction: "W")  // -28.8211111111111