go-Haversine

The haversine formula is a very accurate way of computing distances between two points on the surface of a sphere using the latitude and longitude of the two points. The haversine formula is a re-formulation of the spherical law of cosines, but the formulation in terms of haversines is more useful for small angles and distances.

How to use

• Install: github.com/andrefsilveira1/go-haversine
• Import go-haversine module into your go file

Usage

package main

import (
    "fmt"

    "github.com/andrefsilveira1/go-haversine"
)

func main() {
    distance :=  haversine.Calculate(37.7749, -122.4194, 34.0522, -118.2437)
    fmt.Printf("The distance between the two points is %.2f km.\n", distance)
}

After importing haversine package, use Calculate function an provide 4 coordinates parameters as float64. The distance will be returned as kilometers. The parameters must be: (latitude of point 1, longitude of point 1, latitude of point 2, longitude of point 2)

References

• https://en.wikipedia.org/wiki/Haversine_formula
• https://www.themathdoctors.org/distances-on-earth-2-the-haversine-formula/

Motivation

I was coding a game that needed check the distance between two coordinate points. And as I like to create my own modules to use my stuffs in my projects, I decide to create this another module that easily calculate the distance between two coordinate points.