获取两个经度纬度点之间的行驶距离 [英] get driving distance between two longitude latitude points

问题描述

我正在尝试在轨道、地理编码器或任何其他有效方式上的两个经度纬度点之间获得行驶距离.有吗?

I am trying to get driving distance between two longitude latitude points on rails, geocoder or any other efficient way.. Is there?

推荐答案

Google Maps API v3 文档 指定起点或目的地(或航点)可以是地址或 google.maps.LatLng.要获取两个经度/纬度点之间的行驶距离，请将它们传递到 request 作为 google.maps.LatLng 对象.

The Google Maps API v3 documentation specifies that either the origin or the destination (or waypoints) can be either an address or a google.maps.LatLng. To get the driving distance between two longitude/latitude points, pass them in the request as google.maps.LatLng objects.

相关问题:总距离和时间对于谷歌地图 v3 中的所有航点

概念证明小提琴

代码片段(基于 文档中的示例):

function initMap() {
  var directionsService = new google.maps.DirectionsService;
  var directionsDisplay = new google.maps.DirectionsRenderer;
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 7,
    center: {
      lat: 41.85,
      lng: -87.65
    }
  });
  directionsDisplay.setMap(map);
  // New York, NY, USA (40.7127837, -74.0059413)
  var start = new google.maps.LatLng(40.7127837, -74.0059413);
  //Baltimore, MD, USA (39.2903848, -76.6121893)
  var end = new google.maps.LatLng(39.2903848, -76.6121893);
  calculateAndDisplayRoute(start, end, directionsService, directionsDisplay);
}

function calculateAndDisplayRoute(start, end, directionsService, directionsDisplay) {
  directionsService.route({
    origin: start,
    destination: end,
    travelMode: google.maps.TravelMode.DRIVING
  }, function(response, status) {
    if (status === google.maps.DirectionsStatus.OK) {
      var totaldistance = 0;
      var route = response.routes[0];
      // display total distance information.
      for (var i = 0; i < route.legs.length; i++) {
        totaldistance = totaldistance + route.legs[i].distance.value;
      }
      document.getElementById('distance').innerHTML += "<p>total distance is " + (totaldistance / 1000).toFixed(2) + " km</p>";
      directionsDisplay.setDirections(response);
    } else {
      window.alert('Directions request failed due to ' + status);
    }
  });
}
google.maps.event.addDomListener(window, "load", initMap);

html,
body,
#map {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="distance"></div>
<div id="map"></div>

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