Google maps js api v3: grey map in chrome - google-maps-api-3

Im having some problems with a street view map: http://server.patrikelfstrom.se/johan/fysiosteo/?page_id=118
Sometimes the window gets grey instead of showing the streetview. So my question is; Is there any way to know when the map has finished loading? I guess its treying to render the map before its completly loaded? Thanks
function initialize() {
var myLatlng = new google.maps.LatLng(57.6988062, 11.9683293);
var myOptions = {
zoom: 16,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP,
disableDefaultUI: true
}
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
animation: google.maps.Animation.DROP,
title:"Fysiosteo"
});
var panoramaOptions = {
position: myLatlng,
addressControl: false,
pov: {
heading: 90,
pitch: 0,
zoom: 0
}
};
var panorama = new google.maps.StreetViewPanorama(document.getElementById("pano"),panoramaOptions);
map.setStreetView(panorama);
google.maps.event.addListener(panorama, 'idle', function() { console.log('done'); });
}
function loadScript() {
var script = document.createElement("script");
script.type = "text/javascript";
script.src = "http://maps.googleapis.com/maps/api/js?sensor=false&callback=initialize";
document.body.appendChild(script);
}
window.onload = loadScript;
I tried with this code to print "done" to the console when the map has finished loading, but it didnt work. Am i doing it wrong? :)

The answer to your specific question ("Is there any way to know when the map has finished loading?") is: Yes. When a Map object is finished loading, it will trigger an idle event. Documentation of events that a Map object fires can be found at http://code.google.com/apis/maps/documentation/javascript/reference.html#Map.

Related

How to disable Google Map MouseOver

I am making an aspx page to track vehicles. The only thing I am sticking with is that I don't know how to remove tooltip text from google markers.
The data is displaying correctly.
In the image above, (1) is being shown when I am taking my cursor on marker image and (2) is coming when I am clicking on the marker.
I want to hide (1). How to do that?
I am using the following code:
function initMap() {
var image = '../images/FireTruck.png';
var markers = JSON.parse('<%=ConvertDataTabletoString() %>');
var mapOptions = {
center: new google.maps.LatLng(markers[0].lat, markers[0].lng),
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var infoWindow = new google.maps.InfoWindow();
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
for (i = 0; i < markers.length; i++) {
var data = markers[i]
var myLatlng = new google.maps.LatLng(data.lat, data.lng);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title,
icon: image
});
(function (marker, data) {
google.maps.event.addListener(marker, "click", function (e) {
infoWindow.setContent(data.title);
infoWindow.open(map, marker);
});
})(marker, data);
}
}
Don't set the title property of the marker (that is what sets the tooltip).
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title, // <<<<<<<<<<<<<<<<<< REMOVE THIS
icon: image
});

How to add a marker on a groundoverlay by a click?

I developed a map application using gmap2. I used a groundoverlay (a temperature map) to help users to determine the location of interest and click to select. After gmap2 being replaced by gmap3, it stops working. The bigger problem is that I could not find a way to add markers on the groundoverlay by clicking in gmap3. Someone raised a similar question, but no answer has been available. I hope that such a function is not lost in gmap3. Your help is appreciated.
enter code here
<script>
var map;
var mapCenter = new google.maps.LatLng(54.508742, -125.120850);
var pngBounds = new google.maps.LatLngBounds(new google.maps.LatLng(48.3367, -139.0402),
new google.maps.LatLng(59.99008, -114.1095));
function initialize() {
var mapProp = { center: mapCenter, zoom: 5, mapTypeId: google.maps.MapTypeId.ROADMAP };
map = new google.maps.Map(document.getElementById("googleMap"), mapProp);
var groundoverlay = new google.maps.GroundOverlay(
"http://www.genetics.forestry.ubc.ca/cfcg/ClimateBC40/overlays/climate/MAT_1961_1990.png", pngBounds);
groundoverlay.setMap(map);
google.maps.event.addListener(map, 'click', function (event) { placeMarker(event.latLng); });
}
function placeMarker(location) {
var marker = new google.maps.Marker({ position: location, map: map, draggable: true });
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
In v3 you have to make the groundOverlay non-clickable
var groundoverlay = new google.maps.GroundOverlay(
"http://www.genetics.forestry.ubc.ca/cfcg/ClimateBC40/overlays/climate/MAT_1961_1990.png", pngBounds, **{clickable:false}**);
use below code as simple as that..
let overlayGeoMapImg = new google.maps.GroundOverlay(
'../assets/GNDVI.png',
imageBounds);
overlayGeoMapImg.setMap(map);
google.maps.event.addListener(overlayGeoMapImg, 'click', (event: any) => {
this.ngZone.run(() => {
marker = new google.maps.Marker({
position: event.latLng,
map: map,
title: 'Hello World!'
});
});
});

Google maps Initial marker won''t show up

The code I found for this google map seems to work fine but, The initial marker isn't showing up when I load the map. The map is centered on the initial location but with no Marker. I'm using the php to populate the initial Lat and Lon. Also is there a way to remove the old marker once dragged to a new location?
// global "map" variable
var map = null;
var marker = null;
// popup window for pin, if in use
var infowindow = new google.maps.InfoWindow({
size: new google.maps.Size(150,50)
});
// A function to create the marker and set up the event window function
function createMarker(latlng, name, html) {
var contentString = html;
var marker = new google.maps.Marker({
position: latlng,
map: map,
zIndex: Math.round(latlng.lat()*-100000)<<5
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.setContent(contentString);
infowindow.open(map,marker);
});
google.maps.event.trigger(marker, 'click');
return marker;
}
function initialize() {
// the location of the initial pin
var myLatlng = new google.maps.LatLng(<?=$a1[lat]?>,<?=$a1[lon]?>);
// create the map
var myOptions = {
zoom: 12,
center: myLatlng,
mapTypeControl: true,
mapTypeControlOptions: {style: google.maps.MapTypeControlStyle.DROPDOWN_MENU},
navigationControl: true,
mapTypeId: google.maps.MapTypeId.SATELLITE
}
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(<?=$a1[lat]?>, <?=$a1[lon]?>),
draggable: true
});
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// establish the initial marker/pin
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(<?=$a1[lat]?>, <?=$a1[lon]?>),
draggable: true
});
// establish the initial div form fields
formlat = document.getElementById("latbox").value = myLatlng.lat();
formlng = document.getElementById("lngbox").value = myLatlng.lng();
// close popup window
google.maps.event.addListener(map, 'click', function() {
infowindow.close();
});
// removing old markers/pins
google.maps.event.addListener(map, 'click', function(event) {
//call function to create marker
if (marker) {
marker.setMap(null);
marker = null;
}
// Information for popup window if you so chose to have one
marker = createMarker(event.latLng, "name", "<font color=#660000><b><?=$a1[name]?></b><br>"+event.latLng);
var image = '/images/googlepins/pin2.png';
var myLatLng = event.latLng ;
/*
var marker = new google.maps.Marker({
by removing the 'var' subsquent pin placement removes the old pin icon
*/
marker = new google.maps.Marker({
position: myLatLng,
map: map,
icon: image,
title:"Property Location"
});
// populate the form fields with lat & lng
formlat = document.getElementById("latbox").value = event.latLng.lat();
formlng = document.getElementById("lngbox").value = event.latLng.lng();
});
}
//]]>
The Map-Tag needed to be added. I had someone try help me but, when his answer created more problems he removed his answer and then down voted my question.... Thanks Buddy.. Here is where the Map-Option needed to go.
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// establish the initial marker/pin
var myMarker = new google.maps.Marker({
position: new google.maps.LatLng(<?=$a1[lat]?>, <?=$a1[lon]?>),
map: map, /// <-------This is what I added and seems to have fixed my problem
draggable: true,
});

How do you activate an existing marker to show its infowindow on clicking a separate link in Google Maps v3?

I currently have created markers but I want to be able focus/show the marker's infowindow on click of a separate list of those marker names. How do you accomplish this? I couldn't find anything online.
javascript:
<script type="text/javascript">
var infowindow;
var locations = { 0: { lat: 32.42, long: -99.68, name: 'Taylor Swift', info: '<b>Taylor Swift</b><br/><img src="http://www.8notes.com/images/artists/taylor_swift.jpg" width="50">' },
1: { lat: 35.42, long: -95.68, name: 'Lady Gaga', info: '<b>Lady Gaga</b><br/><img src="http://images2.fanpop.com/images/photos/7500000/L-G-lady-gaga-7557892-500-500.jpg" width="50">' },
2: { lat: 37.78, long: -122.32, name: 'Selena Gomez', info: '<b>Selena Gomez</b><br/><img src="http://videokeman.com/image/pics/SelenaGomezsongPics1YnhHMtsn4mUdCM.jpg" width="50">' }
}
var myLatlng = new google.maps.LatLng(locations[0].lat,locations[0].long);
var myOptions =
{
zoom: 4,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(document.getElementById("map_container"), myOptions);
var markerBounds = new google.maps.LatLngBounds();
$.each(locations, function(key, value)
{
var location = new google.maps.LatLng(value.lat,value.long);
var marker = new google.maps.Marker({
position: location,
map: map,
title:value.name
});
markerBounds.extend(location);
map.fitBounds(markerBounds);
attachSecretMessage(marker, value);
});
function attachSecretMessage(marker,value)
{
google.maps.event.addListener(marker, 'click', function()
{
if (infowindow) infowindow.close();
infowindow = new google.maps.InfoWindow(
{ content: value.info,
size: new google.maps.Size(50,50)
});
infowindow.open(map,marker);
});
}
</script>
html body:
<body>
<a id="showTaylorSwiftInfoWindow" href="#">Taylor Swift</a>
<a id="showLadyGagaInfoWindow" href="#">Lady Gaga</a>
<a id="showSelenaGomezInfoWindow" href="#">Selena Gomez</a>
</body>
You would need to hold all your Markers in an Array so you could search through that and find the appropriate Marker. Once you have that you can call the click event handler, or just make the infowindow and open it as you do in the event handler.
But the important part is that you keep your markers in an Array because that is the only way you will be able to reference them again after they have been created.

Infowindow false positioned

I'm quite new to Google Maps API 3 and can't figure out the following error: All clicks on my markers open the infowindow on the same marker (bad), but with different text (good).
I'm pulling the data out of wordpress custom meta data into an xml, which i then parse; What makes me wondering is the fact that generating the markers works this way, but adding the listener for the infowindow obviously fails.
Any ideas what's happening here?
Live demo at:
http://goo.gl/9seK9
Code
$(document).ready(function(){
var infowindow;
var latlng = new google.maps.LatLng(47.580231,13.771362);
var settings = {
zoom: 8,
center: latlng,
panControl: true,
zoomControl: true,
mapTypeControl: true,
disableDefaultUI:true,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), settings);
jQuery.get("http://rundumadum.eu/de/wp-content/themes/rud/rundumadumMap.xml", {}, function(data) {
var xmllength = $(data).find("mymarkers").children().size();
var supermarkers = [];
jQuery(data).find("mymarker").each(function() {
var myid = $(this).find("id").text();
var mytitle = $(this).find("title").text();
var mylink = $(this).find("link").text();
var mylocation = $(this).find("location").text();
var mysplits = mylocation.split(",");
var mylat = mysplits[0];
var mylng = mysplits[1];
var mylatlng = new google.maps.LatLng(parseFloat(mylat), parseFloat(mylng));
var myinfo = ""+mytitle+"";
var marker = createMyMarker(mytitle, myinfo, mylink, mylatlng);
});
});
function createMyMarker(mytitle, myinfo, mylink, mylatlng) {
marker = new google.maps.Marker({
position: mylatlng,
map: map,
clickable:true,
icon:'http://rundumadum.eu/de/wp-content/themes/rud/static/img/markerTest.png',
html: ''+mytitle+''
});
google.maps.event.addListener(marker, "click", function() {
if (infowindow) infowindow.close();
infowindow = new google.maps.InfoWindow({content: myinfo});
infowindow.open(map, marker);
});
}
return marker;
});
Would be grateful for any ideas ...
One thing I notice is that the marker you are creating in createMyMarker is not declared using var marker, so it looks like you are inadvertently creating a global marker reference. Also, it appears that the statement: return marker is actually after the end of your createMyMarker function, although that may just be a typo that was introduced when you set up your code sample in your question.
At any rate, I believe if you change the code in createMyMarker to declare the marker using var marker within that function, it will give you better results.

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