问题描述
我正在使用 Google 的地理编码器来查找给定地址的 lat lng 坐标.
I'm using Google's Geocoder to find lat lng coordinates for a given address.
var geocoder = new google.maps.Geocoder();
geocoder.geocode(
{
'address': address,
'region': 'uk'
}, function(results, status) {
if(status == google.maps.GeocoderStatus.OK) {
lat: results[0].geometry.location.lat(),
lng: results[0].geometry.location.lng()
});
address 变量取自输入字段.
我想搜索仅在英国的位置.我认为指定 'region': 'uk' 应该就足够了，但事实并非如此.当我输入波士顿"时，它会在美国找到波士顿，而我想要在英国找到波士顿.
I want to search locations only in UK. I thought that specifying 'region': 'uk' should be enough but it's not. When I type in "Boston" it's finding Boston in US and I wanted the one in UK.
如何限制地理编码器仅返回来自一个国家或可能来自某个 lat lng 范围的位置?
How to restrict Geocoder to return locations only from one country or maybe from a certain lat lng range?
谢谢
推荐答案
更新: 这个答案可能不再是最好的方法了.有关详细信息，请参阅答案下方的评论.
UPDATE: This answer may not be the best approach anymore. See the comments below the answer for more details.
除了Pekka 已经建议，您可能还想要将 ', UK' 连接到您的 address，如下例所示:
In addition to what Pekka already suggested, you may want to concatenate ', UK' to your address, as in the following example:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps Geocoding only in UK Demo</title>
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
</head>
<body>
<div id="map" style="width: 400px; height: 300px"></div>
<script type="text/javascript">
var mapOptions = {
mapTypeId: google.maps.MapTypeId.TERRAIN,
center: new google.maps.LatLng(54.00, -3.00),
zoom: 5
};
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
var geocoder = new google.maps.Geocoder();
var address = 'Boston';
geocoder.geocode({
'address': address + ', UK'
},
function(results, status) {
if(status == google.maps.GeocoderStatus.OK) {
new google.maps.Marker({
position:results[0].geometry.location,
map: map
});
}
});
</script>
</body>
</html>
截图:
我发现这是非常可靠的.另一方面，下面的例子表明 region 参数和 bounds 参数在这种情况下都不起作用:
I find that this is very reliable. On the other hand, the following example shows that neither the region parameter, nor the bounds parameter, are having any effect in this case:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps Geocoding only in UK Demo with Bounds</title>
<script src="http://maps.google.com/maps/api/js?sensor=false"
type="text/javascript"></script>
</head>
<body>
<div id="map" style="width: 500px; height: 300px"></div>
<script type="text/javascript">
var mapOptions = {
mapTypeId: google.maps.MapTypeId.TERRAIN,
center: new google.maps.LatLng(50.00, -33.00),
zoom: 3
};
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
var geocoder = new google.maps.Geocoder();
// Define north-east and south-west points of UK
var ne = new google.maps.LatLng(60.00, 3.00);
var sw = new google.maps.LatLng(49.00, -13.00);
// Define bounding box for drawing
var boundingBoxPoints = [
ne, new google.maps.LatLng(ne.lat(), sw.lng()),
sw, new google.maps.LatLng(sw.lat(), ne.lng()), ne
];
// Draw bounding box on map
new google.maps.Polyline({
path: boundingBoxPoints,
strokeColor: '#FF0000',
strokeOpacity: 1.0,
strokeWeight: 2,
map: map
});
// Geocode and place marker on map
geocoder.geocode({
'address': 'Boston',
'region': 'uk',
'bounds': new google.maps.LatLngBounds(sw, ne)
},
function(results, status) {
if(status == google.maps.GeocoderStatus.OK) {
new google.maps.Marker({
position:results[0].geometry.location,
map: map
});
}
});
</script>
</body>
</html>
这篇关于谷歌的地理编码器返回错误的国家，忽略地区提示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！