Question

我有一个像值一样的值。我想将这些值转换为经度和纬度坐标。如果可能，可以使用数学运算。

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，但这可行：

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

Answer 2

你可以扩展你的String类： Swift3示例：

extension String {
    func convertCoordinatesToInteger() -> Double {
        let array = self.components(separatedBy: ",")
        let sign = (array[2] == "W" || array[2] == "S") ? -1.0 : 1.0
        let deg = Double(array[0])!
        let min = Double(array[1])!
        let sec = Double(array[2])!
        return (deg + (min + sec/60.0)/60.0) * sign
    }

只需在您的坐标字符串上调用此函数

let myLatitude = "40,58,36,N".convertCoordinatesToDouble()

如何将度，分，秒和方向转换为经度和纬度坐标？

2 个答案: