I put there my whole code. Trying to determine location address. My script should create still one marker with geocoded address (in console - variable kktina).
But, unfortunately, there isn't everything OK. Because by script still resolves previous location (or it takes previous coordinates, dunno). Maybe there is an error in code, but I'm not able to do this anymore..
So asking for help, thank you!
<!DOCTYPE html>
<html>
<head>
<title>Google Maps JavaScript API v3 Example: Map Simple</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
html, body, #map_canvas {
margin: 0;
padding: 0;
height: 100%;
}
</style>
<link rel="stylesheet" type="text/css" href="style.css">
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&libraries=places,geometry"></script>
<script src="http://code.jquery.com/jquery-1.7.min.js" type="text/javascript"></script>
<script>
var map,marker;
var geocoder = new google.maps.Geocoder();
var markers = [];
var img,icon,type;
var prenos,pos,address = "5",point;
function clearMarkersFromArray() {
if (markers.length>0){
markers[0].setMap(null);
markers.shift(markers[0]);
}
}
function geocodePosition(pos) {
geocoder.geocode({
latLng: pos
}, function(responses) {
if (responses && responses.length > 0) {
address = responses[0].formatted_address;
} else {
address = 'Cannot determine address at this location.';
}
});
return address;
}
function initialize() {
var mapOptions = {
zoom: 7,
center: new google.maps.LatLng(49,19),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions),
google.maps.event.addListener(map, 'click', function(response) {
clearMarkersFromArray();
point = new google.maps.LatLng(response.latLng.$a,response.latLng.ab);
var kktina = geocodePosition(point);
console.log(kktina);
var marker = new google.maps.Marker({
position: point,
draggable: true
});
markers.push(marker)
marker.setMap(map);
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map_canvas" style="height:400px;width:700px;"></div>
</body>
</html>
You can't do this:
function geocodePosition(pos) {
geocoder.geocode({
latLng: pos
}, function(responses) {
if (responses && responses.length > 0) {
address = responses[0].formatted_address;
} else {
address = 'Cannot determine address at this location.';
}
});
return address;
}
the Geocoder is asynchronous, the value of address is undefined when it is returned.
Use the returned data inside the callback function instead, something like this (not tested):
var kktina = null;
function geocodePosition(pos) {
geocoder.geocode({
latLng: pos
}, function(responses) {
if (responses && responses.length > 0) {
kktina = responses[0].formatted_address;
} else {
kktina = 'Cannot determine address at this location.';
}
console.log(kktina);
var marker = new google.maps.Marker({
position: point,
draggable: true
});
markers.push(marker)
marker.setMap(map);
});
}
Related
I'm trying to put markers on a google location map API using data I put on an inedexedDB. I'm able to put the markers accurately using the data I get from the DB, but the markers' infowindow doesn't get them accurately.
Here is my code:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>Google Maps Multiple Markers</title>
<script src="http://maps.google.com/maps/api/js?sensor=true"></script>
<style type="text/css">
#map {
width: 700px;
height: 700px;
}
</style>
</head>
<body>
<div id="map"></div>
<button onclick="showMarker()">Show Markers </button>
<script type="text/javascript">
//prefixes of implementation that we want to test
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
//prefixes of window.IDB objects
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange
if (!window.indexedDB) {
window.alert("Your browser doesn't support a stable version of IndexedDB.")
}
var db;
var request = window.indexedDB.open("mapDB", 1);
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 7,
center: new google.maps.LatLng(11.980433, 121.918866),
mapTypeId: google.maps.MapTypeId.HYBRID
});
const locData = [
{ id: "00-01", name: "Boracay", lat: 11.980433, lng: 121.918866 },
{ id: "00-02", name: "Baguio City", lat: 16.402333, lng: 120.596007 },
{ id: "00-03", name: "Isdaan", lat: 15.475479, lng: 120.596349 },
{ id: "00-04", name: "Mount Pinatubo", lat: 15.142973, lng: 120.349302 }
];
request.onerror = function(event) {
console.log("error: ");
};
request.onsuccess = function(event) {
db = request.result;
console.log("success: "+ db);
};
request.onupgradeneeded = function(event) {
var db = event.target.result;
var objectStore = db.createObjectStore("location", {keyPath: "id"});
for (var i in locData) {
objectStore.add(locData[i]);
}
db.onsuccess = function(event) {
showMarker();
};
}
function showMarker() {
var infowindow = new google.maps.InfoWindow();
var marker, i;
var objectStore = db.transaction("location").objectStore("location");
objectStore.openCursor().onsuccess = function(event) {
var cursor = event.target.result;
if (cursor) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(cursor.value.lat, cursor.value.lng),
map: map
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(cursor.value.name);
infowindow.open(map, marker);
}
})(marker, i));
cursor.continue();
}
};
}
</script>
</body>
</html>
I have tried searching and reading other sources but I can't seem to find what's the problem. Help is very much appreciated.
This is a duplicate of Google Maps JS API v3 - Simple Multiple Marker Example. You need function closure on the name of the marker.
function showMarker() {
var infowindow = new google.maps.InfoWindow();
var marker;
var objectStore = db.transaction("location").objectStore("location");
objectStore.openCursor().onsuccess = function(event) {
var cursor = event.target.result;
if (cursor) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(cursor.value.lat, cursor.value.lng),
map: map
});
google.maps.event.addListener(marker, 'click', (function(marker, name) {
return function() {
infowindow.setContent(name);
infowindow.open(map, marker);
}
})(marker, cursor.value.name));
cursor.continue();
}
};
}
proof of concept fiddle
I use the Google Maps Geocoding API. When I pass in the zip 75116, I get Paris, France. Specifically: 48.8585799, lon = 2.284701700000028. I should get Duncanville, Texas.
This is the URL I'm using:
https://maps.googleapis.com/maps/api/js?sensor=true&client=CLIENT-NAME&v=3.21
I tried appending this to the URL but it didn't work:
&components=country:US
In the maps-Javascript-API the componentRestrictions must be passed along with the geocoderRequest
function init() {
var map = new google.maps.Map(document.getElementById("map-canvas"), {
center: new google.maps.LatLng(0.0),
zoom: 13
}),
geocoder = new google.maps.Geocoder();
geocoder.geocode({
address: '75116',
componentRestrictions: {
country: 'us'
}
},
function(r, s) {
if (s == google.maps.GeocoderStatus.OK) {
map.setCenter(r[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: r[0].geometry.location
});
} else {
window.alert('Geocode was not successful for the following reason: ' + s);
}
}
);
}
html,
body,
#map-canvas {
height: 100%;
margin: 0;
padding: 0;
}
<div id="map-canvas"></div>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3&callback=init">
</script>
I can see two locations in the response for the "75116" geocoding request: Paris and Duncanville. Apparently, "75116" is not a unique location identifier.
Requesting "US 75116" results in the single expectable location.
You have to use geocoder for getting address using zipcode:
Here sample code is provided:
<!DOCTYPE html>
<html>
<head>
<title>Simple Map</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAtRkkKYEMY8CX1IbWbsAYLqzh-_pecegg&callback=initMap"
async defer></script>
<script>
var map;
function initMap() {
var geocoder = new google.maps.Geocoder();
var myLatlng = new google.maps.LatLng(48.8585799, 2.284701700000028);
var mapOptions = {
center : myLatlng,
zoom : 17
};
var map = new google.maps.Map(document.getElementById('map'), mapOptions);
geocoder.geocode({
address : '75116',
componentRestrictions: {
country: 'us'
}
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
} else {
// alert("no asdsd");
}
});
}
</script>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
</body>
</html>
I am using the the Google Maps JavaScript API v3. I have a map that has markers on each state. When I click the state marker, I need access to the state abbreviation in the callback function. Is there any way native to google maps that I can access the state of a marker?
google.maps.event.addListener(mark,'click',function(event){
// how can I access the state abbreviation (e.g. 'MO') from in here?
}
I know that I can probably accomplish this via reverse geocoding, but is there any simpler (and less error-prone) way?
If this can only be accomplished using reverse geocoding, what is the simplest code to access the state? I assume my code would look something like this:
google.maps.event.addListener(mark,'click',function(event){
geocoder.geocode({'latLng': event.latLng}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
... get state from results ...
}
}
}
What would be the simplest code to get the state from the results? Based on the documentation of the address component types, I assume I would be looking for the "short_name" of the "administrative_area_level_1". Is this correct? Is there an easier way to access it than looping over the results until I find the "administrative_area_level_1"? (I have jquery included on the page and so can code with it if it makes anything simpler)
Here's a working example:
<!DOCTYPE html>
<html>
<head>
<title>http://stackoverflow.com/questions/17144375/how-to-get-the-state-of-a-marker?noredirect=1#comment24816710_17144375</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100%; width:100% }
</style>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var map;
var markers = [
{lat:54.60039, lng:-3.13632, state:"AA"},
{lat:54.36897, lng:-3.07561, state:"ZZ"},
];
function initialize() {
var myOptions = {
zoom: 10,
center: new google.maps.LatLng(54.42838,-2.9623),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var marker;
var infowindow = new google.maps.InfoWindow({
content: ''
});
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
for (var i = 0; i < markers.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(markers[i].lat,markers[i].lng),
map: map,
title:"marker " + i,
state: markers[i].state // a custom property of our own
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.setContent(this.state);
infowindow.open(map, this);
});
}
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map_canvas"></div>
</body>
</html>
I want to be able to reverse geocode multiple points on map. My code looks like this:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Simple Polylines</title>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map-canvas, #map_canvas {
height: 100%;
}
#media print {
html, body {
height: auto;
}
#map_canvas {
height: 650px;
}
}
#panel {
position: absolute;
top: 5px;
left: 50%;
margin-left: -180px;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
}
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script type="text/javascript" src="src/polyline.edit.packed.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script>
var flightPath;
var map;
var geocoder;
function initialize() {
geocoder = new google.maps.Geocoder();
var myLatLng = new google.maps.LatLng(0, -180);
var mapOptions = {
zoom: 3,
center: myLatLng,
mapTypeId: google.maps.MapTypeId.TERRAIN
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
var flightPlanCoordinates = [
/*new google.maps.LatLng(37.772323, -122.214897),
new google.maps.LatLng(21.291982, -157.821856),
new google.maps.LatLng(-18.142599, 178.431),
new google.maps.LatLng(-27.46758, 153.027892)*/
];
flightPath = new google.maps.Polyline({
path: flightPlanCoordinates,
strokeColor: '#FF0000',
strokeOpacity: 1.0,
strokeWeight: 2,
map: map
});
// Add a listener for the click event
google.maps.event.addListener(map, 'click', addLatLng);
// Add listener for end of editing event
google.maps.event.addListener(flightPath, 'edit_end', function(path){
var coords = [];
//THIS PART IS INTERESTING FOR THIS POST
//I'm requesting geocoding for every point on map
path.forEach(function(position){
coords.push(position.toUrlValue(5));
var latlng = new google.maps.LatLng(position.lat(), position.lng());
geocoder.geocode({'latLng': latlng}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
if (results[1]) {
console.log(results[1].formatted_address);
} else {
alert('No results found');
}
} else {
alert('Geocoder failed due to: ' + status);
}
});
window.setTimeout(console.log('tic tac'), 500);
});
console.log("[edit_end] path: " + coords.join(" | "));
});
//flightPath.setMap(map);
flightPath.edit();
}
//function when user clicked on map
function addLatLng(event) {
var path = flightPath.getPath();
// Because path is an MVCArray, we can simply append a new coordinate
// and it will automatically appear
path.push(event.latLng);
flightPath.edit();
}
// stop edit mode
function save(){
flightPath.edit(false);
}
google.maps.event.addDomListener(window, 'load', initialize);
$(window).load(function(){
});
</script>
</head>
<body>
<div id="map-canvas"></div>
</body>
</html>
And in return I get some of the points reverse geocoded bot for some i get "Geocoder failed due to: OVER_QUERY_LIMIT", and it's not the same amount of points that pass reverse geocoding, sometimes I get 4 points processed sometimes, sometimes 5, 7 etc. Why do I get that OVER_QUERY_LIMIT error? I made maybe 100 geocoder requests today so I'm far away from 2500 day limit. If there's a better way to handle multiple requests please show it to me.
With the example below,
https://google-developers.appspot.com/maps/documentation/javascript/examples/place-search
By using nearbySearch one of the place return is "John St Square Supermarket".
How do i generate a url to show "John St Square Supermarket" in full google maps?
Right now i'm generating by appending the latitude and longitude into "http://maps.google.com/?q=" which become something like http://maps.google.com/?q=123,456
but it won't show the place's name and the correct marker.
I then tried with http://maps.google.com/?q=John St Square Supermarket
Working good... until i stumble into a place name with multiple locations. For example,
http://maps.google.com/?q=SK%20Dato%27%20Abu%20Bakar
It shows multiple location but i only need one which i already know what it's latitude and longitude is.
You can add the Latitude and Longitude to the URL using the parameter ll:
https://maps.google.com/?q=pizza+hut&ll=-33.867701,151.208471
You can also specify a default zoom level for the user using the paremeter z:
https://maps.google.com/?q=pizza+hut&ll=-33.867701,151.208471&z=12
PlacesResult.url property stands for the url of Google Places.
https://developers.google.com/maps/documentation/javascript/reference#PlaceResult
So you can do like this:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Google Maps JavaScript API v3 Example: Place Search</title>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&libraries=places"></script>
<style>
#map {
height: 400px;
width: 600px;
border: 1px solid #333;
margin-top: 0.6em;
}
</style>
<script>
var map;
var infowindow;
var service;
function initialize() {
var pyrmont = new google.maps.LatLng(-33.8665433, 151.1956316);
map = new google.maps.Map(document.getElementById('map'), {
mapTypeId : google.maps.MapTypeId.ROADMAP,
center : pyrmont,
zoom : 15
});
var request = {
location : pyrmont,
radius : 500,
types : ['store']
};
infowindow = new google.maps.InfoWindow();
service = new google.maps.places.PlacesService(map);
service.nearbySearch(request, callback);
}
function callback(results, status) {
if (status == google.maps.places.PlacesServiceStatus.OK) {
for (var i = 0; i < results.length; i++) {
createMarker(results[i]);
}
}
}
function createMarker(place) {
var placeLoc = place.geometry.location;
var marker = new google.maps.Marker({
map : map,
position : place.geometry.location,
reference : place.reference,
name : place.name
});
google.maps.event.addListener(marker, 'click', onMarker_clicked);
}
function onMarker_clicked() {
var marker = this;
service.getDetails({
reference : marker.get("reference")
}, function(result) {
var html = marker.get("name");
if (result && "url" in result) {
marker.set("url", result.url);
}
if (marker.get("url")) {
html = "<a href='" + marker.get("url") + "' target=_blank>" + html + "</a>";
}
infowindow.setContent(html);
infowindow.open(map, marker);
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>