Google Maps geocoding (address to GLatLng)
I am trying to draw a开发者_如何学Python geodesic polyline with Google Maps JavaScript API from two address points.
var polyOptions = {geodesic:true};
var polyline = new GPolyline([
new GLatLng(),
new GLatLng()
], "#f36c25", 5, 0.8, polyOptions
);
map.addOverlay(polyline);
if (GBrowserIsCompatible()) {
map.addOverlay(polyline);
}
Could someone tell me how can I dynamically geocode an address into GLatLng coordinates? I am a little confused after reading Google's API documentation.
You may want to check out the following example. First it tries to geocode address1. If it succeeds, it tries to geocode address2. If both succeed, it plots the geodesic polyline between the two coordinates, and two markers:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps API Geocoding Demo</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: 400px;"></div>
<script type="text/javascript">
var address1 = 'London, UK';
var address2 = 'New York, US';
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 2,
center: new google.maps.LatLng(35.00, -25.00),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var gc = new google.maps.Geocoder();
gc.geocode({'address': address1}, function (res1, status) {
if (status == google.maps.GeocoderStatus.OK) {
gc.geocode({'address': address2}, function (res2, status) {
if (status == google.maps.GeocoderStatus.OK) {
new google.maps.Marker({
position: res1[0].geometry.location,
map: map
});
new google.maps.Marker({
position: res2[0].geometry.location,
map: map
});
new google.maps.Polyline({
path: [
res1[0].geometry.location,
res2[0].geometry.location
],
strokeColor: '#FF0000',
geodesic: true,
map: map
});
}
});
}
});
</script>
</body>
</html>
Screenshot:
加载中,请稍侯......
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