尝试使用 googlemaps api 和 javascript 查找两个 LatLng 对象之间的距离
您好，我正在使用 html5 地理定位，并使用 navigator.geolocation.getCurrentPosition(success, failed) 对象来获取用户位置。
然后，在 success 函数中，我创建了一个名为 coords 的变量来保存坐标，并创建了一个变量 coords2 来保存我编写的其他坐标。
var coords = new google.maps.LatLng(position.coords.latitude position.coords.longitude);
var coords2 = new google.maps.LatLng(55.8619788, -4.2867578);
使用以下代码，我将地图上的两个点定位为标记：
var mapOptions = {
zoom: 16,
center: coords,
mapTypeControl: false,
navigationControlOptions: {style: google.maps.NavigationControlStyle.SMALL},
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
var marker = new google.maps.Marker({
position: coords,
map: map,
title: "Your current location!"
});
var marker2 = new google.maps.Marker({
position: coords2,
map: map,
title: "Nearest Person!"
});
然后我想要做的是计算出这些点之间的距离。我似乎找不到一种方法可以做到这一点。
这就是我正在尝试的：
var distance = computeDistanceBetween(coords, coords2);
alert(distance);
知道我做错了什么吗？干杯！ 保罗
Hi I am playing with html5 geolocation and have used the navigator.geolocation.getCurrentPosition(success, fail) object to get the users position.
In the success function I then created a variable called coords to hold the coordinates and a variable coords2 to hold other coordinates i made up.
var coords = new google.maps.LatLng(position.coords.latitude position.coords.longitude);
var coords2 = new google.maps.LatLng(55.8619788, -4.2867578);
Using the following code I position the two points on the map as markers:
var mapOptions = {
zoom: 16,
center: coords,
mapTypeControl: false,
navigationControlOptions: {style: google.maps.NavigationControlStyle.SMALL},
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
var marker = new google.maps.Marker({
position: coords,
map: map,
title: "Your current location!"
});
var marker2 = new google.maps.Marker({
position: coords2,
map: map,
title: "Nearest Person!"
});
What I then want to do is work out the distance between these points. I cant seem to find a method that does it.
Here is what I am trying:
var distance = computeDistanceBetween(coords, coords2);
alert(distance);
Any idead what im doing wrong?Cheers!
Paul
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在 v2 中，您可以执行
此操作，记录在 http:// code.google.com/apis/maps/documentation/javascript/v2/reference.html#GLatLng
编辑：我认为您可能使用的是 v3。如果是这样，我相信您将需要完整的名称空间：
In v2, you can do
It's documented at http://code.google.com/apis/maps/documentation/javascript/v2/reference.html#GLatLng
Edit: I think you may be using v3. If so, I believe you'll need the full namespace:
有 computeDistanceBetween()新的V3 几何库
There is the computeDistanceBetween() in the new V3 Geometry Library
默认情况下不加载 google.maps.geometry 库。您必须在引导请求中显式指定加载它：
The google.maps.geometry library is not loaded by default. You have to explicitly specify to load it also, in the bootstrap request: