java - Java中的GPS计算

Question

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Answer 1

使用 GeoTools 和 Maven，应该不会太难。 Maven 会处理依赖关系。幸运的是，您不需要整个 Geotools 套件来进行“ headless ”计算。

我希望这就是您要找的。

pom:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.bar</groupId>
  <artifactId>geo</artifactId>
  <version>1.0-SNAPSHOT</version>

  <repositories>
    <repository>
      <id>maven2-repository.dev.java.net</id>
      <name>Java.net repository</name>
      <url>http://download.java.net/maven/2</url>
    </repository>
    <repository>
      <id>osgeo</id>
      <name>Open Source Geospatial Foundation Repository</name>
      <url>http://download.osgeo.org/webdav/geotools/</url>
    </repository>
    <repository>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
      <id>opengeo</id>
      <name>OpenGeo Maven Repository</name>
      <url>http://repo.opengeo.org</url>
    </repository>
  </repositories>

  <dependencies>
    <dependency>
      <groupId>org.geotools</groupId>
      <artifactId>gt-referencing</artifactId>
      <version>9.0</version>
    </dependency>
  </dependencies>
</project>

代码:

package org.bar;

import org.geotools.referencing.GeodeticCalculator;
import java.awt.geom.Point2D;

/**
 * How far is NY from London ?
 */
public class DistanceTest {

  public final static void main(final String[] args) {
    final GeodeticCalculator calc = new GeodeticCalculator();

    final Point2D london = new Point2D.Double(-0.127512, 51.507222);
    final Point2D ny = new Point2D.Double(-73.94, 40.67 );
    calc.setStartingGeographicPoint(london);
    calc.setDestinationGeographicPoint(ny);

    System.out.println("Distance London-NY: " + calc.getOrthodromicDistance()/1000 + " kms");
  }

}