我有这个脚本可以在谷歌地图上显示自定义标记，但我想包含一个输入文本框并能够输入城市/州和邮政编码并查看其中是否有任何标记假设距该城市/州或邮政编码 400 英里。如果 map 可以是动态的，我会很高兴，这样当你输入城市/州或邮政编码时，它会通过去掉所有其他标记并只留下那个半径内的标记来在 map 上显示结果，如果这太难了，那么一个简单的改变框说明最近的单位也可以 :) 我搜索并发现有人说我应该加载几何库并使用 computeDistanceBetween() 来找到每个标记与中心点的距离，但我不知道如何处理邮政编码部分或如何将所有这些放在一起工作。
这是我的代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title></title>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript" src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/src/markerclusterer.js"></script>
<script type="text/javascript">
var image = new google.maps.MarkerImage("marker-images/image.png",new google.maps.Size(40,35),new google.maps.Point(0,0),new google.maps.Point(20,35));
var shadow = new google.maps.MarkerImage(
'marker-images/shadow.png',
new google.maps.Size(62,35),
new google.maps.Point(0,0),
new google.maps.Point(20,35)
);
var shape = {
coord: [27,0,30,1,32,2,34,3,35,4,36,5,38,6,39,7,39,8,39,9,39,10,38,11,37,12,33,13,34,14,34,15,33,16,32,17,31,18,27,19,28,20,28,21,27,22,26,23,22,25,23,26,24,27,24,28,24,29,24,30,24,31,24,32,23,33,22,34,17,34,16,33,15,32,15,31,14,30,14,29,15,28,15,27,16,26,17,25,13,23,12,22,11,21,11,20,12,19,8,18,7,17,6,16,5,15,5,14,6,13,2,12,1,11,0,10,0,9,0,8,0,7,1,6,3,5,4,4,5,3,7,2,9,1,12,0,27,0],
type: 'poly'
};
// this variable will collect the html which will eventually be placed in the side_bar
var side_bar_html = "";
// arrays to hold copies of the markers and html used by the side_bar
// because the function closure trick doesnt work there
var gmarkers = [];
// global "map" variable
var map = null;
var circle = null;
//marker clusterer
var mc;
var mcOptions = {gridSize: 10, maxZoom: 8};
//global infowindow
var infowindow = new google.maps.InfoWindow();
//geocoder
var geocoder = new google.maps.Geocoder();
var address = new Array("41.8119,-87.6873",
"40.7888,-74.056",
"41.8119,-87.6873",
"48.6681,-97.3627",
"44.9793,-93.273",
"39.4857,-75.6775",
"41.8119,-87.6873",
"42.0203,-87.9059",
"32.7812,-96.7903",
"27.5159,-99.4941",
"32.7812,-96.7903",
"37.5608,-95.6684",
"41.8119,-87.6873",
"38.3763,-97.6702",
"42.2458,-83.2491",
"41.8122,-91.9139",
"41.8397,-88.0887",
"41.8397,-88.0887",
"38.5128,-122.787",
"41.8397,-88.0887",
"42.8863,-87.892",
"42.8863,-87.892",
"30.7539,-83.3321",
"39.889,-84.2422",
"34.106,-83.589");
var content = new Array("Unit No# 0206",
"Unit No# #2003",
"Unit No# 0176",
"Unit No# #2001",
"Unit No# 0124",
"Unit No# 0157",
"Unit No# #0162",
"Unit No# 0104",
"Unit No# 0118",
"Unit No# #2007",
"Unit No# 0112",
"Unit No# 0139",
"Unit No# 0205",
"Unit No# 0127",
"Unit No# 0187",
"Unit No# 0105",
"Unit No# 0214",
"Unit No# 0186",
"Unit No# 0173",
"Unit No# 0134",
"Unit No# 0128",
"Unit No# 0125",
"Unit No# 0158",
"Unit No# 0193",
"Unit No# 0201");
//min and max limits for multiplier, for random numbers
//keep the range pretty small, so markers are kept close by
var min = .999999;
var max = 1.000001;
function createMarker(latlng,text) {
var marker = new google.maps.Marker({
draggable: false,
raiseOnDrag: false,
icon: image,
shadow: shadow,
shape: shape,
position: latlng,
map: map
});
///get array of markers currently in cluster
var allMarkers = mc.getMarkers();
//check to see if any of the existing markers match the latlng of the new marker
if (allMarkers.length != 0) {
for (i=0; i < allMarkers.length; i++) {
var existingMarker = allMarkers[i];
var pos = existingMarker.getPosition();
if (latlng.equals(pos)) {
text = text + " & " + content[i];
}
}
}
google.maps.event.addListener(marker, 'click', function() {
infowindow.close();
infowindow.setContent(text);
infowindow.open(map,marker);
});
mc.addMarker(marker);
return marker;
}
function initialize(){
var options = {
zoom: 4,
center: new google.maps.LatLng(39.8282,-98.5795),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map'), options);
//marker cluster
var gmarkers = [];
mc = new MarkerClusterer(map, [], mcOptions);
for (i=0; i<address.length; i++) {
var ptStr = address[i];
var coords = ptStr.split(",");
var latlng = new google.maps.LatLng(parseFloat(coords[0]),parseFloat(coords[1]));
gmarkers.push(createMarker(latlng,content[i]));
}
}
function codeAddress() {
var address = document.getElementById('address').value;
var radius = parseInt(document.getElementById('radius').value, 10) * 1609.34;
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
// map: map, <-- uncomment to show red marker
position: results[0].geometry.location
});
if (circle) circle.setMap(null);
circle = new google.maps.Circle({center:marker.getPosition(),
radius: radius,
fillOpacity: 0.35,
fillColor: "#FF0000",
map: map});
var bounds = new google.maps.LatLngBounds();
var foundMarkers = 0;
for (var i=0; i<gmarkers.length;i++) {
if (google.maps.geometry.spherical.computeDistanceBetween(gmarkers[i].getPosition(),marker.getPosition()) < radius) {
bounds.extend(gmarkers[i].getPosition())
gmarkers[i].setMap(map);
foundMarkers++;
} else {
gmarkers[i].setMap(null);
}
}
if (foundMarkers > 0) {
map.fitBounds(bounds);
} else {
map.fitBounds(circle.getBounds());
}
} else {
alert(status);
}
});
}
var infowindow = new google.maps.InfoWindow(
{
size: new google.maps.Size(150,50)
});
function handleKeyPress(e){
var key=e.keyCode || e.which;
if (key==13){
codeAddress();
}
}
function handleResetKeyPress(e){
if (map.getZoom() != 4) map.setZoom(4);
map.setCenter(new google.maps.LatLng(39.8282, -98.5795));
document.getElementById("address").value = 'Enter City,State or Zipcode';
document.getElementById("radius").value = '200';
}
</script>
<style>
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
.auto-style1 {
text-align: center;
}
#footer {
position : absolute;
bottom : 0;
height : 40px;
margin-top : 40px;
/* border: 1px solid blue; */
}
</style>
</head>
<body onload='initialize()'>
<div id="map"></div>
<div id="footer" class="auto-style1" style="left: 0px; bottom: 0; width: 100%">
<input type="text" id="address" value="Enter City,State or Zipcode" onclick="if(this.value=='Enter City,State or Zipcode'){this.value=''}" onblur="if(this.value==''){this.value='Enter City,State or Zipcode'}" onkeypress="handleKeyPress(event);" style="width: 183px">
<input type="button" value="Search" onclick="codeAddress();">
<input type="button" value="Reset" onclick="handleResetKeyPress();">
<input type="text" id="radius" value="200" style="width: 42px" onclick="if(this.value=='200'){this.value=''}" onblur="if(this.value==''){this.value='200'}" onkeypress="handleKeyPress(event);"> miles
</div>
</body>
</html>
最佳答案
这是一个工作示例。
该示例使用 all_locations - 示例位置数组。
您可以将其替换为您的位置(例如，您从数据库中获取的位置)。您可以在输入栏中插入任何地址，例如'123 New Street, New York, 56789, NY' 并使用 google.maps.Geocoder 代码会将 map 地理编码为 LatLng 位置，并围绕该位置绘制半径。只有落在地址周围半径范围内的位置才会显示在 map 上。要查看示例位置，请输入“Second Steet, New York”作为地址。
var map = null;
var radius_circle;
var markers_on_map = [];
var geocoder;
var infowindow;
//all_locations is just a sample, you will probably load those from database
var all_locations = [
{type: "Restaurant", name: "Restaurant 1", lat: 40.723080, lng: -73.984340},
{type: "School", name: "School 1", lat: 40.724705, lng: -73.986611},
{type: "School", name: "School 2", lat: 40.724165, lng: -73.983883},
{type: "Restaurant", name: "Restaurant 2", lat: 40.721819, lng: -73.991358},
{type: "School", name: "School 3", lat: 40.732056, lng: -73.998683}
];
//initialize map on document ready
$(document).ready(function(){
var latlng = new google.maps.LatLng(40.723080, -73.984340); //you can use any location as center on map startup
var myOptions = {
zoom: 1,
center: latlng,
mapTypeControl: true,
mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU},
navigationControl: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
geocoder = new google.maps.Geocoder();
google.maps.event.addListener(map, 'click', function(){
if(infowindow){
infowindow.setMap(null);
infowindow = null;
}
});
});
function showCloseLocations() {
var i;
var radius_km = $('#radius_km').val();
var address = $('#address').val();
//remove all radii and markers from map before displaying new ones
if (radius_circle) {
radius_circle.setMap(null);
radius_circle = null;
}
for (i = 0; i < markers_on_map.length; i++) {
if (markers_on_map[i]) {
markers_on_map[i].setMap(null);
markers_on_map[i] = null;
}
}
if (geocoder) {
geocoder.geocode({'address': address}, function (results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (status != google.maps.GeocoderStatus.ZERO_RESULTS) {
var address_lat_lng = results[0].geometry.location;
radius_circle = new google.maps.Circle({
center: address_lat_lng,
radius: radius_km * 1000,
clickable: false,
map: map
});
if (radius_circle) map.fitBounds(radius_circle.getBounds());
for (var j = 0; j < all_locations.length; j++) {
(function (location) {
var marker_lat_lng = new google.maps.LatLng(location.lat, location.lng);
var distance_from_location = google.maps.geometry.spherical.computeDistanceBetween(address_lat_lng, marker_lat_lng); //distance in meters between your location and the marker
if (distance_from_location <= radius_km * 1000) {
var new_marker = new google.maps.Marker({
position: marker_lat_lng,
map: map,
title: location.name
}); google.maps.event.addListener(new_marker, 'click', function () {
if(infowindow){
infowindow.setMap(null);
infowindow = null;
}
infowindow = new google.maps.InfoWindow(
{ content: '<div style="color:red">'+location.name +'</div>' + " is " + distance_from_location + " meters from my location",
size: new google.maps.Size(150,50),
pixelOffset: new google.maps.Size(0, -30)
, position: marker_lat_lng, map: map});
});
markers_on_map.push(new_marker);
}
})(all_locations[j]);
}
} else {
alert("No results found while geocoding!");
}
} else {
alert("Geocode was not successful: " + status);
}
});
}
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("maps", "3",{other_params:"sensor=false&libraries=geometry"});
</script>
<body style="margin:0px; padding:0px;" >
<input id="address" value="Second Steet, New York" placeholder="Input Address"/>
<select id="radius_km">
<option value=1>1km</option>
<option value=2>2km</option>
<option value=5>5km</option>
<option value=30>30km</option>
</select>
<button onClick="showCloseLocations()">Show Locations In Radius</button>
<div id="map_canvas" style="width:500px; height:300px;">
</body>
</html>关于php - 谷歌地图 - 查找给定半径内的所有标记 Javascript/Php，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18512184/