I have a simple embedded map using fusion table. For some reason one of the markers disappear on the map and only shows up at certain zoom level. This is happening for newly added record.
I use fusion table query to load the map.
function initialize() {
var myoptions = {
center: new google.maps.LatLng(19.07621, 72.87766),
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var locString = $.jStorage.get("loc");
map = new google.maps.Map(document.getElementById('map-canvas'),myoptions);
layerl0 = new google.maps.FusionTablesLayer({
query: {
select: "'Name'",
from: '19uKyFR_QRg0oRyE0RetwgSIUbAJtOJCxu3vd3dE',
where: "'City' = '" + locString + "'"
},
map: map
});
}
This query shld return one marker. It only appears at certain zoom level
FT servers need up to 1 minute to cache new records on all zoom levels. You might have hit this limitation.
Related
I am using Markerclustererplus with Google Maps API v3 to ease the display of markers on the screen.
The problem is that I will have several markers in the exact same place (and it should be that way) and I would like to, when clicking on a cluster, to display an info window containing all the markers that were clustered.
I've tried several code and similar questions here in StackOverflow, unfortunately I do not master JS and couldn't solve this.
Markers are pushed into an array with some data:
var marker = new google.maps.Marker({
position : latlng,
map : map,
icon : marker_image
});
map.markers.push(marker);
When I click an isolated marker, the info window appears ok with a title and an image of that marker:
var infowindow = new google.maps.InfoWindow({
content : $marker.attr('data-title') + '<img width="50" src="' + $marker.attr('data-image') + '">'
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open( map, marker );
});
What I would like to happen, is that when clicker a cluster, an info window would open with all of the markers it contains displayed with their corresponding title and image (like, reversing the clustering operation).
Thank you for the help.
Managed to solve this, thanks to the example provided in here.
If anyone is interested, here is how I've done:
First, I've added the markers to the map getting data attributes coming from several custom fields from Wordpress custom posts:
function add_marker( $marker, map ) {
var latlng = new google.maps.LatLng( $marker.attr('data-lat'), $marker.attr('data-lng') );
var marker_image = $marker.attr('data-marker');
var marker_name = $marker.attr('data-title');
var marker_userpicture = $marker.attr('data-image');
var marker = new google.maps.Marker({
position : latlng,
map : map,
icon : marker_image,
name : marker_name,
userpicture : marker_userpicture
});
map.markers.push(marker);
Created the MarkerCluster:
var markerCluster = new MarkerClusterer(map, map.markers, mcOptions);
Added a click event listener that got the markers from the cluster, their data, created the info window content from that data and finally opened the info window:
google.maps.event.addListener(markerCluster, 'click', function(cluster){
var content ='';
var clickedMarkers = cluster.getMarkers();
for (var i = 0; i < clickedMarkers.length; i++) {
if(i==0) {
var var_pos = clickedMarkers[i];
}
var clickedMarkersNames = clickedMarkers[i].name;
var clickedMarkersPicture = clickedMarkers[i].userpicture;
content +=clickedMarkersNames;
content +=clickedMarkersPicture;
}
var infowindow = new google.maps.InfoWindow();
infowindow.setContent(content);
infowindow.open(map,var_pos);
});
I made a google map app use google map api v3 and kml file. However, sometime it work, and sometime it always zoom to the max level and center is not mine options.center(near Africa).
Why is it?
And my kml file was uploaded to mine Google Map account.
function initialize1() {
var myLatlng = new google.maps.LatLng(30.566991,114.315491);
var myOptions = {
zoom: 10,
center: myLatlng,
overviewMapControl:true,
overviewMapControlOptions: {
opened:true
},
scaleControl:true,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map1= new google.maps.Map(document.getElementById("map_canvas1"), myOptions);
var nyLayer = new google.maps.KmlLayer('https://maps.google.com/maps/ms? **************',
{suppressInfoWindows: true});
nyLayer.setMap(map1);
google.maps.event.addListener(nyLayer, 'click', function(kmlEvent) {
var text = kmlEvent.featureData.description;
showInDiv(text);
});
}
Thanks very much,
That behavior occurs when the kml file doesn't exist/can't be found. You haven't provided the URL of the file to allow testing that.
Another thing to check would be the validity of the file:
http://www.feedvalidator.org/
You could also check the KmlLayerStatus provided by the API to see what it reports.
I'm building an application using CakePHP that will store events including the event location. When a user visits the application they will see a Google Map that will get their location and show events near them in the form of little pins that they can click on to view the event details.
I have some questions though:
1.) How would I store the Location in the DB? Would the actual geolocation coordinates be the best bet and how would I make it easy for a user to create an event and enter them.
2.) Once I have the events in place how do I create custom pins with the info pulled from the DB? Example like foursquare:
3.) Whilst getting the users location using HTML5 Geolocation how do I show a little loader on the map again like Foursquare does?
So far I've managed to create the Map and make the controls minified and get the location of the viewer but I'm not sure how do 3 and show a better feedback to the user for the geolocation.
If someone could help me with those other two questions as well it'd be very much appreciated as I'm finding it very confusing so far. Thanks.
var map;
function initialize() {
var myOptions = {
zoom: 8,
panControl: false,
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.SMALL
},
mapTypeControl: false,
scaleControl: false,
streetViewControl: false,
overviewMapControl: false,
center: new google.maps.LatLng(-34.397, 150.644),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map_canvas'),
myOptions);
// Try HTML5 geolocation
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = new google.maps.LatLng(position.coords.latitude,
position.coords.longitude);
var infowindow = new google.maps.InfoWindow({
map: map,
position: pos,
content: 'Location found using HTML5.'
});
map.setCenter(pos);
}, function() {
handleNoGeolocation(true);
});
} else {
// Browser doesn't support Geolocation
handleNoGeolocation(false);
}
}
function handleNoGeolocation(errorFlag) {
if (errorFlag) {
var content = 'Error: The Geolocation service failed.';
} else {
var content = 'Error: Your browser doesn\'t support geolocation.';
}
var options = {
map: map,
position: new google.maps.LatLng(60, 105),
content: content
};
var infowindow = new google.maps.InfoWindow(options);
map.setCenter(options.position);
}
google.maps.event.addDomListener(window, 'load', initialize);
1) Store the actual coordinates of the location and any extra meta data (if you have it) like place name, foursquare_id, date, etc. Storing it this way will make using the data later on straightforward, such as plotting on a map or location name lookup. This will be your Location model.
Create an Event model which you can then associate to a Location. You could hack together some nice interactive functionality using event handlers on your map markers.
Something like: "the user clicks a location on the map, up pops a box asking them would like like to create a new event at this location, marker is added to the map and a form appears where they can populate the event details, etc, etc." You get the idea.
Have a look at the Marker documentation.
2) You can set a custom image for the map markers using ImageMarker Class. Take a look at the huge set of examples for ideas of what's possible.
3) The navigator.geolocation.getCurrentPosition() method as I understand it, is asynchronous. The first argument is the successCallback.
With this in mind, you could set an overlay on your map: "Finding your location", then make the call to getCurrentPosition(). In your successCallback function, you would then hide the overlay.
I've been playing around with the google maps api through javascript (I'm also new to javascript).
I've experimented with adding info windows and markers to the map by following the api examples.
What I want to do is overlay a KML file onto a map of Ireland - and I searched the fusion tables for the KML file contains the information for the borders of the counties of Ireland.
The kml file came from a fusion table here:
http://www.google.com/fusiontables/DataSource?dsrcid=935280&search=ireland+counties&cd=0
I exported it to a kml file and uploaded it to a public site (see javascript - I'm not able to post more than 2 links)
I'm trying to load the kml file in the link below - that map I've selected appears but the KML overlay does not.
http://songsaboutsuperheroes.com/index.html
I've tried using a link to the fusion table ID and had no luck with that.
I've also tried to use the KML Network link and had no luck with that.
So I'm trying to load the KML file directly like I've seen in tutorials.
Can anyone point me in the right direction - I'm not sure what I'm doing wrong - thanks in advance!
Here is the Javascript I'm using:
function initialize() {
var latlng = new google.maps.LatLng(53.36942,-6.378288);
var myOptions = {
zoom: 7 ,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var myLayer = new google.maps.KmlLayer(
'http://songsaboutsuperheroes.com/Ireland_Counties.kml');
myLayer.setMap(map);
}
This works - I accessed the fusion table that holds the kml data directly:
var latlng = new google.maps.LatLng(53.36942,-6.378288);
var myOptions = {
zoom: 7,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
layer = new google.maps.FusionTablesLayer(935280, {
suppressInfoWindows: true
});
layer.setQuery("select geometry,name_1 from 935280");
layer.setMap(map);
var kmlUrl = 'http://www.yoursite.com/YOUR_KML_FILE.kml';
var KML_single = new google.maps.KmlLayer(kmlUrl, {color:"#4385F1" } );
KML_single.setMap(map);
EXML_single = new GeoXml("EXML_single", map, kmlUrl, {
sidebarid:"sidebar",
iwwidth:280
});
EXML_single.parse('SOME LOADING TEXT HERE');
I wonder whether someone may be able to help me please.
I've put some coding together (please see below) whereby a user goes onto a HTML form, they type in an address and click a 'Search' button. Upon doing this, the location is plotted on the Google map and the Lat and Long co-oridnates are automatically entered into the associated text boxes on my form.
What I would like to do, if at all possible, is for the marker to be draggable so the user can fine tune the location, and as they drag the marker, I'd like for the Lat and Long fields to change their
associated co-ordinates.
In addition, I'd also like, if at all possible, to have a field on the form called 'NearestAddress' to show the nearest address to where the marker has been dragged to.
I've managed to make the markers draggable but they don't update the Latitude and Longitude text boxes. I'm also unsure how to add the functionality to show the updated address to where the marker has been dragged to.
(function() {
// Defining some global variables
var map, geocoder, myMarker, infowindow;
window.onload = function() {
// Creating a new map
var options = {
zoom: 3,
center: new google.maps.LatLng(55.378051,-3.435973),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('map'), options);
// Getting a reference to the HTML form
var form = document.getElementById('LocationSearchForm');
// Catching the forms submit event
form.onsubmit = function() {
// Getting the address from the text input
var address = document.getElementById('Address').value;
// Making the Geocoder call
getCoordinates(address);
// Preventing the form from doing a page submit
return false;
}
}
// Create a function the will return the coordinates for the address
function getCoordinates(address) {
// Check to see if we already have a geocoded object. If not we create one
if(!geocoder) {
geocoder = new google.maps.Geocoder();
}
// Creating a GeocoderRequest object
var geocoderRequest = {
address: address
}
// Making the Geocode request
geocoder.geocode(geocoderRequest, function(results, status) {
// Check if status is OK before proceeding
if (status == google.maps.GeocoderStatus.OK) {
// Center the map on the returned location
map.setCenter(results[0].geometry.location);
// Creating a new marker and adding it to the map
var myMarker = new google.maps.Marker({
map: map,
position: results[0].geometry.location,
draggable:true
});
document.getElementById('Latitude').value= results[0].geometry.location.lat();
document.getElementById('Longitude').value= results[0].geometry.location.lng();
google.maps.event.addListener(myMarker, 'dragend', function(evt){
document.getElementById('current').innerHTML = '<p>Marker dropped: Current Lat: ' + evt.latLng.lat().toFixed(3) + ' Current Lng: ' + evt.latLng.lng().toFixed(3) + '</p>';
});
google.maps.event.addListener(myMarker, 'dragstart', function(evt){
document.getElementById('current').innerHTML = '<p>Currently dragging marker...</p>';
});
map.setCenter(myMarker.position);
myMarker.setMap(map);
}
});
}
})();
I am new to Google maps development and I'm not even sure whether it's possible to achieve what I want. I've been working on this now for a few weeks and it's driving me a little crazy, so if someone could perhaps point me in the right direction it would gratefully be received.
Many thanks and kind regards
Chris
Instead of evt.latLng.lat().toFixed(3) you should just use the myMarker object and grab it's position.
Getting the nearest address is not that easy, but requires reverse geocoding, and to be honest I don't see the point in doing it. You would have to make special cases for the occurences where there couldn't be found a closest address and stuff like that.
If you really want to do it though there is a webservice you can call to do it.