The Go language method for calculating the distance between two degrees of longitude and latitude

This article illustrates an example of how the Go language calculates the distance between two degrees of longitude and latitude. Share with you for your reference. The specific implementation method is as follows:

package main

       

import (

    "fmt"

    "math"

)

       

func main() {

    lat1 := 29.490295

    lng1 := 106.486654

       

    lat2 := 29.615467

    lng2 := 106.581515

    fmt.Println(EarthDistance(lat1, lng1, lat2, lng2))

}

       

func EarthDistance(lat1, lng1, lat2, lng2 float64) float64 {

    radius := 6371000 // 6378137

    rad := math.Pi/180.0

           

    lat1 = lat1 * rad

    lng1 = lng1 * rad

    lat2 = lat2 * rad

    lng2 = lng2 * rad

           

    theta := lng2 - lng1

    dist := math.Acos(math.Sin(lat1) * math.Sin(lat2) + math.Cos(lat1) * math.Cos(lat2) * math.Cos(theta))

           

    return dist * radius

}

I hope this article has been helpful to your programming of Go language.