Java tutorial
//package com.java2s; /* * wardrive4 - android wardriving application (remake for the ICS) * Copyright (C) 2012 Raffaele Ragni * https://github.com/raffaeleragni/android-wardrive4 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { private static final double EARTH_RADIUS = 6371; /** * Reconvert back to lat/lon. * * @param x x value * @param y y value * @param z z value * * @return point in lat,lon */ private static double[] cartesian2latlon(double x, double y, double z) { return new double[] { Math.atan(y / x), Math.acos(z / EARTH_RADIUS) }; } }