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google maps: remove marker clusters [closed]

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Looking to clear all marker clusters using on click from a floating panel. I can clear and show all markers but not the marker clustered icons. I have scoured through multiple similar questions but am missing something for sure.
When I try to use the below code it comes back with markerCluster is not defined at clearMarkers.
JS Code:
var map;
var geocoder;
var markerAll;
var markers = [];
//Code to load the map with center point of Monterey MA
function initMap() {
var monterey = {lat: 42.181613, lng: -73.215013};
map = new google.maps.Map(document.getElementById('map'), {
zoom: 10,
center: monterey,
mapTypeId: google.maps.MapTypeId.HYBRID,
labels: true,
});
//collect customer data and geocoder object - declare geocoder as global
var cusdata = JSON.parse(document.getElementById('data').innerHTML);
geocoder = new google.maps.Geocoder();
codeAddress(cusdata);
var allData = JSON.parse(document.getElementById('allData').innerHTML);
showAllCustomers(allData);
var searchData = JSON.parse(document.getElementById('searchData').innerHTML);
showSearchedCustomer(searchData);
}
function showAllCustomers(allData) {
//declare info window variable outside of loop to allow to clear when selecting other markers
var infoWind = new google.maps.InfoWindow;
//Create marker clusterer to group data
var markerCluster = new MarkerClusterer(map, [], {
imagePath: 'images/m'
});
Array.prototype.forEach.call(allData, function(data){
var content = document.createElement('div');
var strong = document.createElement('strong');
strong.textContent = [data.lastName + ' ' + data.physicalAddress];
content.appendChild(strong);
//add image to infowindow - you are also able to add image path to mysql and then append dynamically
// var img = document.createElement('img');
// img.src = 'images/santahat.png';
// img.style.width = '50px';
// content.appendChild(img);
//Create markers for customer locations and customize
var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
var markerAll = new google.maps.Marker({
position: new google.maps.LatLng(data.latitude, data.longitude),
map: map,
icon: iconBase + 'homegardenbusiness.png'
});
//push markers to marker clusterer
markerCluster.addMarker(markerAll);
markers.push(markerAll);
})
}
// Sets the map on all markers in the array.
function setMapOnAll(map) {
for (let i = 0; i < markers.length; i++) {
markers[i].setMap(map);
}
}
// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
setMapOnAll(null);
markerCluster.clearMarkers(markerAll); <----- THIS IS WHAT I TRIED TO ADD TO CLEAR CLUSTERS
}
// Shows any markers currently in the array.
function showMarkers() {
setMapOnAll(map);
}

You need to put the markerCluster in the global scope so it can be used in the clearMarkers function (which is (probably) defined in the the global scope).
var markerCluster;
function showAllCustomers(allData) {
//Create marker clusterer to group data
markerCluster = new MarkerClusterer(map, [], {
imagePath:
"https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m",
});
proof of concept fiddle
code snippet:
var map;
var geocoder;
var markerAll;
var markers = [];
//Code to load the map with center point of Monterey MA
function initMap() {
var monterey = {
lat: 42.181613,
lng: -73.215013
};
map = new google.maps.Map(document.getElementById('map'), {
zoom: 3,
center: {
lat: -28.024,
lng: 140.887
},
mapTypeId: google.maps.MapTypeId.HYBRID,
labels: true,
});
//collect customer data and geocoder object - declare geocoder as global
var cusdata = JSON.parse(document.getElementById('data').innerHTML);
geocoder = new google.maps.Geocoder();
// codeAddress(cusdata);
var allData = JSON.parse(document.getElementById('allData').innerHTML);
allData = locations;
showAllCustomers(allData);
var searchData = JSON.parse(document.getElementById('searchData').innerHTML);
// searchData = locations;
// showSearchedCustomer(searchData);
}
var markerCluster;
function showAllCustomers(allData) {
//Create marker clusterer to group data
markerCluster = new MarkerClusterer(map, [], {
imagePath: 'https://unpkg.com/#google/markerclustererplus#4.0.1/images/m',
});
//declare info window variable outside of loop to allow to clear when selecting other markers
var infoWind = new google.maps.InfoWindow;
Array.prototype.forEach.call(allData, function(data) {
var content = document.createElement('div');
var strong = document.createElement('strong');
strong.textContent = [data.lastName + ' ' + data.physicalAddress];
content.appendChild(strong);
//add image to infowindow - you are also able to add image path to mysql and then append dynamically
// var img = document.createElement('img');
// img.src = 'images/santahat.png';
// img.style.width = '50px';
// content.appendChild(img);
//Create markers for customer locations and customize
var iconBase = 'https://maps.google.com/mapfiles/kml/shapes/';
var markerAll = new google.maps.Marker({
position: new google.maps.LatLng(data.latitude, data.longitude),
map: map,
// icon: iconBase + 'homegardenbusiness.png'
});
//push markers to marker clusterer
markerCluster.addMarker(markerAll);
markers.push(markerAll);
})
google.maps.event.addDomListener(document.getElementById('btn'), 'click', clearMarkers);
}
// Sets the map on all markers in the array.
function setMapOnAll(map) {
for (let i = 0; i < markers.length; i++) {
markers[i].setMap(map);
}
}
// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
setMapOnAll(null);
markerCluster.clearMarkers(markerAll);
}
// Shows any markers currently in the array.
function showMarkers() {
setMapOnAll(map);
}
const locations = [{
latitude: -31.56391,
longitude: 147.154312,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -33.718234,
longitude: 150.363181,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -33.727111,
longitude: 150.371124,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -33.848588,
longitude: 151.209834,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -33.851702,
longitude: 151.216968,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -34.671264,
longitude: 150.863657,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -35.304724,
longitude: 148.662905,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -36.817685,
longitude: 175.699196,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -36.828611,
longitude: 175.790222,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.75,
longitude: 145.116667,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.759859,
longitude: 145.128708,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.765015,
longitude: 145.133858,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.770104,
longitude: 145.143299,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.7737,
longitude: 145.145187,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.774785,
longitude: 145.137978,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -37.819616,
longitude: 144.968119,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -38.330766,
longitude: 144.695692,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -39.927193,
longitude: 175.053218,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -41.330162,
longitude: 174.865694,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -42.734358,
longitude: 147.439506,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -42.734358,
longitude: 147.501315,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -42.735258,
longitude: 147.438,
lastName: "Smith",
physicalAddress: "New York, NY"
},
{
latitude: -43.999792,
longitude: 170.463352,
lastName: "Smith",
physicalAddress: "New York, NY"
},
];
/* 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;
}
<!DOCTYPE html>
<html>
<head>
<title>Marker Clustering</title>
<script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
<script src="https://unpkg.com/#google/markerclustererplus#4.0.1/dist/markerclustererplus.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap&libraries=&v=weekly" defer></script>
<!-- jsFiddle will insert css and js -->
</head>
<body>
<input id="btn" type="button" value="Clear Markers" />
<div id="map"></div>
<div id="data">[]</div>
<div id="allData">[]</div>
<div id="searchData">[]</div>
</body>
</html>

GoogleMaps MarkerClusterer InfoWindow Position

I have a problem with the position of the markercluster's infoWindow. It doesn't show up at the marker position. Instead it is positioned on the upper left corner of the map. Here is my code:
<script type="text/javascript">
function initialize(cities) {
var mapOptions = {
center: new google.maps.LatLng(48.220, 15.199),
zoom: 9,
mapTypeId: google.maps.MapTypeId.ROADMAP,
};
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
var markers=[];
var markerCluster = new MarkerClusterer(map, markers, {zoomOnClick: false});
//markerCluster should be always above the geocoder-->
geocoder = new google.maps.Geocoder();
for (var i = 0; i < cities.length; i++) {
var city = cities[i];
geocoder.geocode({'address': city.city+" Niederösterreich"}, function(results, status){
if (status == google.maps.GeocoderStatus.OK) {
position=results[0].geometry.location;
var marker = new google.maps.Marker({
map: map,
position: position,
title: "Ort: "+city.city + "\nBeitrag: " + city.title +"\nRed.: "+ city.reporter +"\nDatum: "+ city.storydate,
});
// below code alway lies inside the loop
markers.push(marker);
markerCluster.addMarker(marker);
}
});
};
// Listen for a cluster to be clicked
google.maps.event.addListener(markerCluster, 'clusterclick', function(cluster) {
var markers = markerCluster.getMarkers();
var content = '';
for (var i = 0; i < markers.length; i++) {
var marker = markers[i];
content += marker.title;
content += ("<br>");
};
// Convert lat/long from cluster object to a usable MVCObject
var info = new google.maps.MVCObject;
var infowindow = new google.maps.InfoWindow();
// infowindow.setPosition(this.markerCluster.getCenter());
// infowindow.setPosition(latLng);
infowindow.close();
infowindow.setContent(content);
infowindow.open(map, info);
google.maps.event.addListener(map, 'zoom_changed', function() { infowindow.close() });
});
}
</script>

Your MVCObject doesn't have any properties. According to the documentation, if you pass the optional anchor argument into the function .open, it must expose a LatLng position property, yours doesn't (as it doesn't have any properties, it can't expose any).
open(map?:Map|StreetViewPanorama, anchor?:MVCObject)
Return Value: None
Opens this InfoWindow on the given map. Optionally, an InfoWindow can be associated with an anchor. In the core API, the only anchor is the Marker class. However, an anchor can be any MVCObject that exposes a LatLng position property and optionally a Point anchorPoint property for calculating the pixelOffset (see InfoWindowOptions). The anchorPoint is the offset from the anchor's position to the tip of the InfoWindow.
The simplest solution is to not use the anchor argument, set the position of the infowindow directly.
google.maps.event.addListener(markerCluster, 'clusterclick', function (cluster) {
var markers = cluster.getMarkers();
var content = '';
for (var i = 0; i < markers.length; i++) {
var marker = markers[i];
content += marker.title;
content += ("<br>");
}
var infowindow = new google.maps.InfoWindow();
infowindow.setPosition(cluster.getCenter());
infowindow.setContent(content);
infowindow.open(map);
google.maps.event.addListener(map, 'zoom_changed', function () {
infowindow.close();
});
});
proof of concept fiddle
code snippet:
var geocoder;
var markers = [];
function initialize(cities) {
var mapOptions = {
center: new google.maps.LatLng(48.220, 15.199),
zoom: 9,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
var markerCluster = new MarkerClusterer(map, markers, {
zoomOnClick: false,
imagePath: 'https://cdn.jsdelivr.net/gh/googlemaps/v3-utility-library#07f15d84/markerclustererplus/images/m'
});
//markerCluster should be always above the geocoder-->
geocoder = new google.maps.Geocoder();
for (var i = 0; i < cities.length; i++) {
var city = cities[i];
geocodeCity(city, markerCluster);
}
// Listen for a cluster to be clicked
google.maps.event.addListener(markerCluster, 'clusterclick', function(cluster) {
var markers = cluster.getMarkers();
var content = '';
for (var i = 0; i < markers.length; i++) {
var marker = markers[i];
content += marker.title;
content += ("<br>");
}
var infowindow = new google.maps.InfoWindow();
infowindow.setPosition(cluster.getCenter());
infowindow.close();
infowindow.setContent(content);
infowindow.open(map);
google.maps.event.addListener(map, 'zoom_changed', function() {
infowindow.close();
});
});
}
function geocodeCity(city, markerCluster) {
geocoder.geocode({
'address': city.city + " Niederösterreich"
}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
position = results[0].geometry.location;
var marker = new google.maps.Marker({
map: map,
position: position,
title: "Ort: " + city.city + "\nBeitrag: " + city.title + "\nRed.: " + city.reporter + "\nDatum: " + city.storydate
});
// below code alway lies inside the loop
markers.push(marker);
markerCluster.addMarker(marker);
} else {
document.getElementById('info').innerHTML += city.city + " status=" + status + "<br>";
}
});
}
google.maps.event.addDomListener(window, "load", function() {
initialize(cities);
});
var cities = [{
city: "Sankt Polten",
title: "title 0",
reporter: "reporter 0",
storydate: "November 25,2015 00:00:00"
}, {
city: "Wiener Neustadt",
title: "title 1",
reporter: "reporter 1",
storydate: "November 25, 2015 01:01:01"
}, {
city: "Baden",
title: "title 2",
reporter: "reporter 2",
storydate: "November 25,2015 02:02:02"
}, {
city: "Klosterneuburg",
title: "title 3",
reporter: "reporter 3",
storydate: "November 25, 2015 03:03:03"
}, {
city: "Krems",
title: "title 4",
reporter: "reporter 4",
storydate: "November 25,2015 04:04:04"
}, {
city: "Amstetten",
title: "title 5",
reporter: "reporter 5",
storydate: "November 25, 2015 05:05:05"
}, {
city: "Modling",
title: "title 6",
reporter: "reporter 6",
storydate: "November 25,2015 06:06:06"
}, {
city: "Traiskirchen",
title: "title 7",
reporter: "reporter 7",
storydate: "November 25, 2015 07:07:07"
}, {
city: "Schwechat",
title: "title 8",
reporter: "reporter 8",
storydate: "November 25,2015 08:08:08"
}, {
city: "Ternitz",
title: "title 9",
reporter: "reporter 9",
storydate: "November 25, 2015 09:09:09"
}, {
city: "Stockerau",
title: "title 10",
reporter: "reporter 10",
storydate: "November 25,2015 10:10:10"
}];
html,
body,
#map {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<script src="https://cdn.jsdelivr.net/gh/googlemaps/v3-utility-library#07f15d84/markerclustererplus/src/markerclusterer.js"></script>
<div id="info"></div>
<div id="map"></div>

My marker don't show exact id

OBJECT
var malls = [{
id: 0,
name: 'Leclerc',
lastname: 'Paris,France',
address:'Boulevard Rahal El Meskini Casablanca Maroc',
]
},
{
/*Malls B*/
id: 1,
name: 'Carefour',
lastname: 'Toulouse,France',
address:'Angle Zaid Ou Hmad Rue Sidi Belyout, Casablanca Maroc', }, ];
MY CONTROLLER
var address = "";//document.getElementById('address').value;
var id_mall ="";
var malls = Malls.all();
for (var i = 0; i < malls.length; i++) {
mall = malls[i];
addMarker(mall);}
function addMarker(address) {
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(-34.397, 150.644);
var mapOptions = {
zoom: 14,
center: latlng
}
id = mall.id;
address = mall.address;
console.debug(address);
map = new google.maps.Map(document.getElementById('map'), mapOptions);
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,
title: 'shopping center',
position: results[0].geometry.location,
url:'#/tab/malls/'+id
});
google.maps.event.addListener(marker, 'click', function() {
window.location.href=marker.url;
});
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
});
//google.maps.event.addDomListener(window, 'load', initialize);
}
I have 2 markers, and when I click on a marker , I receive :tab/malls/1 and the other the same thing normally have to be /tab/malls/0 and tab/malls/1 ,
I did not find the solution.
Please need help

Your object code appears malformed: there is an unmatched ] character on line 8. Try deleting this character and running it.

Google Maps API marker positioning is wrong

I am using the google maps API and am struggling with positioning of some of my markers.
I have 2 sets of markers one set coloured, and the other grey (to represent coming soon)
However the grey set load in the wrong position - and seem to be in a diagonal pattern with each other. It appears the longitude is more or less correct - but the latitudes have...well messed up.
I figure I've set up the two different sets of markers up wrong as I created a new variable for the grey markers.
<script type="text/javascript">
var locations = [
['London ', 51.500, 0.1167],
['Frankfurt ', 50.1167, 8.6833],
['Paris ', 48.8567, 2.3508],
['Dublin ', 53.3478, -6.2597],
['Amsterdam', 52.3667, 4.9000],
['Tokyo ', 35.6895, 139.6917],
['Hongkong ', 22.2670, 114.1880],
['Singapore ', 1.3000, 103.8000],
['Sydney ', -33.8600, 151.2094],
['NewYork ', 42.9047, -78.8494],
['LosAngeles ', 34.0500, -118.2500],
['Dallas ', 32.7758, -96.7967],
['Chicago ', 41.8369, -87.6847],
['SanFrancisco ', 37.7833, -122.4167],
];
var locationsCS = [
['Manchester - coming soon', 53.4667, 2.2333],
['Bucharest - coming soon', 44.4325, 26.1039],
['NewDelhi - coming soon', 28.6139, 77.2089],
['SaoPaulo - coming soon', -23.5500, -46.6333],
['Toronto - coming soon', 43.7000, 79.4000]
];
var map = new google.maps.Map(document.getElementById('map'), {
featureType: "administrative",
elementType: "geometry.fill",
stylers: [
{ visibility: "off" }
],
zoom: 3,
center: new google.maps.LatLng(40.4000, 3.6833),
disableDefaultUI: true,
zoomControl:false,
scrollwheel:false,
zoomControlOptions: {
style:google.maps.ZoomControlStyle.SMALL
},
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var mapStyle = [
{
featureType: "administrative",
elementType: "geometry.fill",
stylers: [
{ visibility: "off" },
]
}
];
var styledMap = new google.maps.StyledMapType(mapStyle);
map.mapTypes.set('myCustomMap', styledMap);
map.setMapTypeId('myCustomMap');
var infowindow = new google.maps.InfoWindow();
var marker, i;
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
size:(23,34),
map: map,
icon: 'img/cdn_marker.png'
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
}
for ( i = 0; i < locationsCS.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locationsCS[i][1], locationsCS[i][1]),
map: map,
icon: 'img/cdn_marker_grey.png'
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locationsCS[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
}
</script>

Merge tool tip of overlapping Markers on Google Map

Currently, I am displaying 500-600 Markers on Google map, with their names as tooltip. Now,
I need to display the tool-tip of all overlapping markers as comma-separated i.e. Marker1, Marker2, Marker3 etc. if Marker1, Marker2, Marker3 are overlapped on map.
I found many other different examples on google map at internet especially at GeoCodeZip, but not of my requirement.
if this requirement is once filled, Am afraid of performance issues on zoom changed events, as tooltip needed to be updated (if overlapping is changed).
Update1 : I have already show Overlapping Marker spiderfier to client but not acceptable.
Does anyone have right path or working example ?
Thanks
-Anil

The core of this is to find the pixel distance between LatLngs. Then before adding each marker check the pixel distance between it and any existing markers. If there is another marker nearby add to the title otherwise create a new marker. jsFiddle
function init() {
var mapOptions = {
center: new google.maps.LatLng(0, -0),
zoom: 4,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map-canvas'),mapOptions);
// to get the pixel position from the latlng
// https://stackoverflow.com/questions/1538681/how-to-call-fromlatlngtodivpixel-in-google-maps-api-v3
var overlay = new google.maps.OverlayView();
overlay.draw = function() {};
overlay.setMap(map);
google.maps.event.addListenerOnce(map, 'idle', function() {
if (overlay.getProjection()) {
var points = [
{ latlng: new google.maps.LatLng(40, -100), title: '1' },
{ latlng: new google.maps.LatLng(40.125, -100.125), title: '2' },
{ latlng: new google.maps.LatLng(40.25, -100.25), title: '3' },
{ latlng: new google.maps.LatLng(40.5, -100.5), title: '4' },
{ latlng: new google.maps.LatLng(40.75, -100.75), title: '5' },
{ latlng: new google.maps.LatLng(41, -101), title: '6' },
{ latlng: new google.maps.LatLng(35, -95), title: '7' },
{ latlng: new google.maps.LatLng(45, 105), title: '8' },
{ latlng: new google.maps.LatLng(25, -115), title: '9' },
{ latlng: new google.maps.LatLng(55, -85), title: '10' },
{ latlng: new google.maps.LatLng(30, -34), title: '11' }
];
// for each point
var markers = [];
points.forEach(function (point) {
var nearby = false;
var pointPixelPosition = overlay.getProjection().fromLatLngToContainerPixel(point.latlng);
markers.forEach(function(marker) {
var markerPixelPosition = overlay.getProjection().fromLatLngToContainerPixel(marker.getPosition());
// check for marker 'near by'
if (Math.abs(pointPixelPosition.x - markerPixelPosition.x) < 10 || Math.abs(pointPixelPosition.y - markerPixelPosition.y) < 10) {
nearby = true;
marker.setTitle(marker.getTitle() + ', ' + point.title);
}
});
// create new marker
if (!nearby) {
markers.push(new google.maps.Marker({ map: map, position: point.latlng, title: point.title }));
}
});
}
map.setCenter(new google.maps.LatLng(39.8282, -98.5795));
});
}