I have a kml layer on my google maps app. I tried to refresh the kml layer by generating a new google.maps.KmlLayer object every 10s. The kml file contains customized icons. It works fine for the first several times of refreshing. However after a few minutes, the kml layer disappears (the icons disappear but they are still clickable). Any ideas why the kml layer disappears?
Here is the snippet of my code:
function initialize() {
var p = new google.maps.LatLng(36.668419,-119.267578);
var mapOptions = {
zoom: 5,
center: p,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"),
mapOptions);
var kmllayer = new google.maps.KmlLayer('http://api.flickr.com/services/feeds/geo/?g=322338#N20&lang=en-us&format=feed-georss'
+ '?key='
+ Math.random(),
({'preserveViewport': true}));
geotaggingLayer.setMap(map);
setInterval(refresh, 10000, kmllayer);
}
function refresh(layer) {
var newkmllayer = new google.maps.KmlLayer('http://api.flickr.com/services/feeds/geo/?g=322338#N20&lang=en-us&format=feed-georss'
+ '?key='
+ Math.random(),
({'preserveViewport': true}));
layer.setMap(null);
newkmllayer.setMap(map);
}
Thank you.
Related
Small problem.
So, i'm working with the google maps api for a small project at my internship.
This is how I make my map.
function initMap() {
window.map = new google.maps.Map(document.getElementById('map'), {
zoom: 12,
center: {lat: 62.323907, lng: -150.109291},
mapTypeId: google.maps.MapTypeId.SATELLITE
});
var bounds = new google.maps.LatLngBounds(
new google.maps.LatLng(62.281819, -150.287132),
new google.maps.LatLng(62.400471, -150.005608));
// The photograph is courtesy of the U.S. Geological Survey.
var srcImage ='https://developers.google.com/maps/documentation/javascript/';
srcImage += 'examples/full/images/talkeetna.png';
overlay = new USGSOverlay(bounds, srcImage, map);
}
The problem I have is the next: I want to determine the zoom, I tried this with:
var zoom = window.map.getZoom();
alert(zoom);
This works! But the only problem I have, this always shows me '12'. And I want to get the current zoom level, after zooming in or out and that doesn't seem to work, it always keeps displaying '12'. How can I fix this?
It is quite simple add a "zoom_changed" listener for your map and get the current zoom of the map
The code can be like
map.addListener("zoom_changed", function() {
alert("Zoom :" + map.getZoom());
});
I'm trying to implement a simple page that have google maps enabled, but I'm having an issue where my google maps marker is not showing after uploading the files to the hosting, it works fine locally.
I tried both using a custom marker and the default one, the issue is the same, it works locally but doesn't after uploading.
Here's the script I'm using
/*GOOGLE MAPS*/
function initialize() {
// Declare map style
var grayscale = [{"featureType":"landscape","stylers":[{"saturation":-100},{"lightness":65},{"visibility":"on"}]},{"featureType":"poi","stylers":[{"saturation":-100},{"lightness":51},{"visibility":"simplified"}]},{"featureType":"road.highway","stylers":[{"saturation":-100},{"visibility":"simplified"}]},{"featureType":"road.arterial","stylers":[{"saturation":-100},{"lightness":30},{"visibility":"on"}]},{"featureType":"road.local","stylers":[{"saturation":-100},{"lightness":40},{"visibility":"on"}]},{"featureType":"transit","stylers":[{"saturation":-100},{"visibility":"simplified"}]},{"featureType":"administrative.province","stylers":[{"visibility":"off"}]},{"featureType":"water","elementType":"labels","stylers":[{"visibility":"on"},{"lightness":-25},{"saturation":-100}]},{"featureType":"water","elementType":"geometry","stylers":[{"hue":"#ffff00"},{"lightness":-25},{"saturation":-97}]}];
var mapOptions = {
center: {lat: 46.211000, lng: 16.913157},
zoom: 13,
scrollwheel: false
};
var map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
// Change map style
map.setOptions({styles: grayscale});
var image = 'img/vemo-google-map-marker.png';
var marker = new google.maps.Marker({
position: {lat: 46.211000, lng: 16.913157},
map: map,
title: "VEMO TRADE d.o.o.",
icon: image,
});
}
google.maps.event.addDomListener(window, 'load', initialize);
You need to specifiy whole absolute path here:
var image = '//YOUR_DOMAIN/img/vemo-google-map-marker.png';
I'm using a combination of Google Maps, GeoXML and MarkerClusterer to map historic texts to places. The user can choose the texts they want to map, and the page goes and gets the KML for those group of texts and displays it with MarkerClusterer.
Something is causing the page to recenter over India/China when new texts are selected (bottom left corner: http://lakes.jhadley.net/lit_file.htm.
Here is the primary function that deals with the map:
function loadMap(myLat, myLong, zoomLevel, generatedUrl) {
var mapOptions = {
center: new google.maps.LatLng(myLat, myLong),
zoom: zoomLevel,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var mcOptions = {gridSize: 80, maxZoom: 15};
var map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
markerclusterer = new MarkerClusterer(map, [], mcOptions);
var myParser = new geoXML3.parser({
map: map,
singleInfoWindow:true,
suppressInfoWindows:true,
createMarker:function(placemark){
var point = placemark.latlng;
var info = "<pre" + placemark.name + "<br /><br />" + placemark.description + "</pre>";
var marker = new google.maps.Marker({position:point});
//Suppress the speachbubbles and have them appear in a text window instead
google.maps.event.addListener(marker, 'click', function() {
var text = placemark.description.replace(/ target="_blank"/ig, "");
showInContentWindow(text);
}); //Add listener
markerclusterer.addMarker(marker);
}
});
myParser.parse("http://lakes.jhadley.net/generateKml/"+generatedUrl);
function showInContentWindow(text) {
var sidediv = document.getElementById('kwic_window');
sidediv.innerHTML = text;
} //showInContentWindow
} //function loadMap
I can't personally see why the map centre is being repositioned over India/China when new texts are loaded. Can anyone tell me what I'm missing?
by default geoxml3 attempts to zoom to fit the data. If you don't want it to do that, set the "zoom" option to false. From the documentation:
zoom | boolean (true) | If true, the parser will automatically move the map to a best-fit of the geodata after parsing of a KML document completes.
That is where the "center" of the markers are:
http://www.geocodezip.com/geoxml3_test/v3_geoxml3_kmltest_linktoB.html?filename=http://www.geocodezip.com/geoxml3_test/SO_20140312_1,4.kml
http://www.geocodezip.com/geoxml3_test/v3_geoxml3_kmltest_linktoB.html?filename=http://www.geocodezip.com/geoxml3_test/SO_20140312_1.kml
I trying to loading kml file on map in html but it takes more time to loading kml file on mobile screen
and then show kml file on map after long time.I want to know is any method to load it in background like android I used below code to loading kml file.
var geoXml = null;
var map = null;
var myLatLng = null;
var i;
jQuery(document).ready(function () {
myLatLng = new google.maps.LatLng(37.422104808, -122.0838851);
var myOptions = {
zoom: 18,
center: new google.maps.LatLng(37.422104808, -122.0838851),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("mapContainer"), myOptions);
geoXml = new geoXML3.parser({
map: map,
singleInfoWindow: true
});
geoXml.parse('mykml.KML');
});
I've found custom Google Maps icon images that can be laid out as a sprite (matrix of small pics). I effectively want to create custom icons which are numbered 1-10 (for my 10 results per page) and also have mouseover effects (change color).
I'm not sure how to do this. The relevant code is the following:
$('.entries').each(function(index){
var entry=$(this);
latlng[index]=new google.maps.LatLng($(this).attr('data-lat'),$(this).attr('data-lng'));
marker[index]=new google.maps.Marker({
position:latlng[index],
map:map,
icon:image_url
});
if(marker[index]){
marker[index].setMap(map);
}
Even if I can't make it a sprite (which seems unlikely right now) I'd like to change the icon on mouseover.
I've tried to do so and created a hack that SORT of works. The problem here is that the map flickers occassionally when reset. Is there a better way?
google.maps.event.addListener(marker[index],'mouseover', function(){
entry.addClass('map-hover');
// alert(marker[index].icon);
marker[index].icon='{{site}}media/map-icons/iconb'+(index+1)+'.png'
marker[index].setMap(map);
});
google.maps.event.addListener(marker[index],'mouseout', function(){
entry.removeClass('map-hover');
marker[index].icon='{{site}}media/map-icons/iconr'+(index+1)+'.png'
marker[index].setMap(map);
});
function initialize() {
var mapDiv = document.getElementById('map-canvas');
var latLng = new google.maps.LatLng(37.4419, -122.1419);
var map = new google.maps.Map(mapDiv, {
center: latLng,
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var image = 'http://code.google.com/apis/maps/documentation/javascript/examples/images/beachflag.png';
var myLatLng = new google.maps.LatLng(-33.890542, 151.274856);
var beachMarker = new google.maps.Marker({
position: latLng,
map: map,
icon: image
});
}
This code might help you to get an idea about placing custom markers.