我需要找到所提供的经纬度和半径附近的所有位置。我想我可以通过使用地理围栏来实现这一点，但我不知道如何进行。我有以下数据。设置纬度，并获取5km每个纬度范围内的半径位置。
任何人帮助如何开始这个。
我的输入：
拉长
33.450909, -112.073196
33.466210, -112.064620
33.451640, -112.099130
33.437160, -112.048400
33.480860, -112.082130
33.489950, -112.074700
到目前为止尝试过：
<!DOCTYPE html >
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title>Creating a Store Locator on Google Maps</title>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body style="margin:0px; padding:0px;" onload="initMap()">
<div>
<label for="raddressInput">Search location:</label>
<input type="text" id="addressInput" size="15"/>
<label for="radiusSelect">Radius:</label>
<select id="radiusSelect" label="Radius">
<option value="50" selected>50 kms</option>
<option value="30">30 kms</option>
<option value="20">20 kms</option>
<option value="10">10 kms</option>
</select>
<input type="button" id="searchButton" value="Search"/>
</div>
<div><select id="locationSelect" style="width: 10%; visibility: hidden"></select></div>
<div id="map" style="width: 100%; height: 90%"></div>
<script>
var map;
var markers = [];
var infoWindow;
var locationSelect;
function initMap() {
var sydney = {lat: 33.450909, lng: -112.073196};
map = new google.maps.Map(document.getElementById('map'), {
center: sydney,
zoom: 11,
mapTypeId: 'roadmap',
mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU}
});
infoWindow = new google.maps.InfoWindow();
searchButton = document.getElementById("searchButton").onclick = searchLocations;
locationSelect = document.getElementById("locationSelect");
locationSelect.onchange = function() {
var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
if (markerNum != "none"){
google.maps.event.trigger(markers[markerNum], 'click');
}
};
}
function searchLocations() {
var address = document.getElementById("addressInput").value;
var geocoder = new google.maps.Geocoder();
geocoder.geocode({address: address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
searchLocationsNear(results[0].geometry.location);
} else {
alert(address + ' not found');
}
});
}
function clearLocations() {
infoWindow.close();
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(null);
}
markers.length = 0;
locationSelect.innerHTML = "";
var option = document.createElement("option");
option.value = "none";
option.innerHTML = "See all results:";
locationSelect.appendChild(option);
}
function searchLocationsNear(center) {
clearLocations();
var radius = document.getElementById('radiusSelect').value;
var searchUrl = 'storelocator.php?lat=' + center.lat() + '&lng=' + center.lng() + '&radius=' + radius;
downloadUrl(searchUrl, function(data) {
var xml = parseXml(data);
var markerNodes = xml.documentElement.getElementsByTagName("marker");
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < markerNodes.length; i++) {
var id = markerNodes[i].getAttribute("id");
var name = markerNodes[i].getAttribute("name");
var address = markerNodes[i].getAttribute("address");
var distance = parseFloat(markerNodes[i].getAttribute("distance"));
var latlng = new google.maps.LatLng(
parseFloat(markerNodes[i].getAttribute("lat")),
parseFloat(markerNodes[i].getAttribute("lng")));
createOption(name, distance, i);
createMarker(latlng, name, address);
bounds.extend(latlng);
}
map.fitBounds(bounds);
locationSelect.style.visibility = "visible";
locationSelect.onchange = function() {
var markerNum = locationSelect.options[locationSelect.selectedIndex].value;
google.maps.event.trigger(markers[markerNum], 'click');
};
});
}
function createMarker(latlng, name, address) {
var html = "<b>" + name + "</b> <br/>" + address;
var marker = new google.maps.Marker({
map: map,
position: latlng
});
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
markers.push(marker);
}
function createOption(name, distance, num) {
var option = document.createElement("option");
option.value = num;
option.innerHTML = name;
locationSelect.appendChild(option);
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request.responseText, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function parseXml(str) {
if (window.ActiveXObject) {
var doc = new ActiveXObject('Microsoft.XMLDOM');
doc.loadXML(str);
return doc;
} else if (window.DOMParser) {
return (new DOMParser).parseFromString(str, 'text/xml');
}
}
function doNothing() {}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAVD0ngfhOFs5rnww7UFyz9rN6UznOIZ1U&callback=initMap">
</script>
</body>
</html>
使用上面我可以指向单点，但我想要的是获得半径以上提供的每个纬度周围的位置是5 km