get Earth Radius For Latitude - Java java.lang

Java examples for java.lang:Math Geometry

  1. HOME
  2. Java
  3. java.lang
  4. Math Geometry

Description

get Earth Radius For Latitude

Demo Code


//package com.java2s;

public class Main {
    private static double getEarthRadiusForLatitude(double latitude) {
        double equatorRadius = 6378.137; // equatorial radius in km
        double polarRadius = 6356.7523142; // polar radius in km
        return equatorRadius
                * Math.sqrt(Math.pow(polarRadius, 4)
                        / Math.pow(equatorRadius, 4)
                        * Math.pow((Math.sin(latitude)), 2)
                        + Math.pow(Math.cos(latitude), 2))
                / Math.sqrt(1/*w ww .  jav a2s.co m*/
                        - (1 - (polarRadius * polarRadius)
                                / (equatorRadius * equatorRadius))
                        * Math.pow(Math.sin(latitude), 2));
    }
}

Related Tutorials