I don’t think you can determine if a point is a road or a building exclusively with Google Maps data. For this, I think you will need an additional data source.
However, you can determine if a point is expensive using the Snap point to street method .
Google Maps API v3 Haversine, ( ) .
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps JavaScript API v3 Example: Directions Simple</title>
<link href="http://code.google.com/apis/maps/documentation/javascript/examples/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
rad = function(x) {return x*Math.PI/180;}
distHaversine = function(p1, p2) {
var R = 6371;
var dLat = rad(p2.lat() - p1.lat());
var dLong = rad(p2.lng() - p1.lng());
var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
Math.cos(rad(p1.lat())) * Math.cos(rad(p2.lat())) * Math.sin(dLong/2) * Math.sin(dLong/2);
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
var d = R * c;
return d.toFixed(3);
}
var dirn = new google.maps.DirectionsService();
var map;
function initialize() {
var center = new google.maps.LatLng(53.7877, -2.9832);
var myOptions = {
zoom:15,
mapTypeId: google.maps.MapTypeId.ROADMAP,
center: center
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
google.maps.event.addListener(map, "click", function(event) {
var request = {
origin: event.latLng,
destination: event.latLng,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
dirn.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
if(response.routes && response.routes.length > 0){
route = response.routes[0];
if(route.overview_path && route.overview_path.length > 0){
pos = route.overview_path[0];
new google.maps.Marker({
position: pos,
map: map
});
alert(distHaversine(request.origin, pos));
}
}
}
});
});
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas"></div>
</body>
</html>
, .