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Archive for the ‘longitude’ Category

Google Map V3 – Get Langitude and Latitude on mouseover

  • First an object representing google map properties is created with zoom level, map center and map type.
  • Then a map object is created. It takes two parameters. One is the div where the map should be displayed and the other is the object which contains various properties to initialize the google map.
  • With the above to lies the map can be displayed.
  • Next are the two event handlers which will display the lattitude and longitude when the move is moved over the google map or when the mouse is clicked on the map.
  • The event listener needs three parameters first is the map object, next is the event like onmousemove or onclick and the third parameter is the callback function to which the coordinates are passed as a parameter.
  • Each time the event handlers (callback functions) are called i am updating the lattitude and longitude.

That is all folks. Enjoy.

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”&gt;
<html xmlns=”http://www.w3.org/1999/xhtml”&gt;
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=iso-8859-1″ />
<title>Get Lattitude and Longitude onmouseover and onclick in Google Map v3 – Get lat lng on click google map version 3 – Programming – Google Maps</title>
<meta name=”keywords” content=”get lattitude longitude, latlng onclick google map, latlng onmousemove google map, get lattitude longitude onclick, google map mouse event, show lattitude longutude onmousemove, show latlng onclick”>
<meta name=”description” content=”Get lattitude and longitude when onmouseover and onmouseclick in google map version 3. Get lat lng onclick and onmouseover on google map version 3.” />
<script type=”text/javascript” src=”http://maps.google.com/maps/api/js?sensor=false”></script&gt;
<style type=”text/css”>
body {font:10pt arial; }
.main { text-align:center; font:12pt Arial; width:100%; height:auto; }
.eventtext {width:100%; margin-top:20px; font:10pt Arial; text-align:left; line-height:25px; background-color:#EDF4F8;
padding:5px; border:1px dashed #C2DAE7;}
#mapa {width:100%; height:340px; border:5px solid #DEEBF2;}
ul {font:10pt arial; margin-left:0px; padding:5px;}
li {margin-left:0px; padding:5px; list-style-type:decimal;}
.code {border:1px dashed #cecece; background-color:#F7F7F7; padding:5px;}
.small {font:9pt arial; color:gray; padding:2px; }
.jimi { margin:0px;}
</style>
</head>
<body onload=”mapa()”>
<div class=”main”>

<div style=”width:70%;  margin:0px auto;”>
<div id=”mapdiv” style=”width:100%; height:500px;”></div>
<div class=”eventtext”>
<div>Lattitude: <span id=”latspan”></span></div>
<div>Longitude: <span id=”lngspan”></span></div>
<div>Lat Lng: <span id=”latlong”></span></div>
<div>Lat Lng on click:
  <input type=”text” id=”latlongclicked” style=”width:300px; border:1px inset gray;”></span></div>
</div>
</div>
</div>
<script type=”text/javascript”>
var map;
function mapa()
{
//var opts = {‘center’: new google.maps.LatLng(26.12295, -80.17122), ‘zoom’:11, ‘mapTypeId’: google.maps.MapTypeId.ROADMAP }
var opts = {‘center’: new google.maps.LatLng(34.54140959793796, 73.36364895561223), ‘zoom’:6, ‘mapTypeId’: google.maps.MapTypeId.ROADMAP }
map = new google.maps.Map(document.getElementById(‘mapdiv’),opts);
google.maps.event.addListener(map,’click’,function(event) {
document.getElementById(‘latlongclicked’).value = event.latLng.lat() + ‘, ‘ + event.latLng.lng()
})
google.maps.event.addListener(map,’mousemove’,function(event) {
document.getElementById(‘latspan’).innerHTML = event.latLng.lat()
document.getElementById(‘lngspan’).innerHTML = event.latLng.lng()
document.getElementById(‘latlong’).innerHTML = event.latLng.lat() + ‘, ‘ + event.latLng.lng()
});
}
</script>
</body>
</html>

live demo check here http://www.ecarobar.com/google/

Get Latitude and Longitude with Google Maps V3

I would like to share with you a little piece of code that I find quite useful in my applications. I do create lots of guides that require a small utility to find out the latitude and longitude of a business location from a control panel in order to display the maps appropiately on the Web. Here I will do my best to explain a step procedure on how to do that -once you know the procedure, it is easy to create plugins or whatever you wish to do.

Step 1

 First of all, lets make a reference to the new version of Google Maps. Check that we have to specify a parameter sensor=false. To find out more about this parameter please follow this link.

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false">script>


Step 2



Now we are going to write the HTML tags on the BODY of our document that will hold the map and the controls that will hold latitude, longitude and zoom level references. Also, see the CSS that control the size of the map holder.


<style>
div#gmap {
width: 100%;
height: 300px;
}
style>
<body>
<center>
<div id="gmap">div>
lat:<span id="lat">span> lon:<span id="lon">span><br/>
zoom level: <span id="zoom_level">span>
center>
body>


Step 3

Now, we are going to write the function that will display the map when the document loads. The function, that we will call ‘initialize’ has different parts that we will describe now:

Part 1

Setting the map zoom level and its position in the world:

var myLatlng = new google.maps.LatLng(38.971154274048345,1.415863037109375); // IBIZA http://www.ramirezcobos.com/wp-includes/images/smilies/icon_smile.gif" alt=":)" class="wp-smiley">
var myOptions = {
zoom: 16,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("gmap"), myOptions);

Part 2

Placing a marker on the map specifying its center position (please refer to above code for LatLon location).

// marker refers to a global variable
marker = new google.maps.Marker({
position: myLatlng,
map: map
});

Part 3

Now, the events that will take control of the marker center re-positioning and placing the information on the correspondent document objects (lat, lon, and zoom level).

// if center changed then update lat and lon document objects                          
google.maps.event.addListener(map, 'center_changed', function() {                      
var location = map.getCenter();                                                        
document.getElementById("lat").innerHTML = location.lat();                             
document.getElementById("lon").innerHTML = location.lng();                             
// call function to reposition marker location                                         
placeMarker(location);                                                                 
});                                                                                    
// if zoom changed, then update document object with new info                          
google.maps.event.addListener(map, 'zoom_changed', function() {                        
zoomLevel = map.getZoom();                                                             
document.getElementById("zoom_level").innerHTML = zoomLevel;                           
});                                                                                    
// double click on the marker changes zoom level                                       
google.maps.event.addListener(marker, 'dblclick', function() {                         
zoomLevel = map.getZoom()+1;                                                           
if (zoomLevel == 20) {                                                                 
zoomLevel = 10;                                                                        
}                                                                                      
document.getElementById("zoom_level").innerHTML = zoomLevel;                           
map.setZoom(zoomLevel);                                                                
});                                                                                    


Part 4

Initialize the document objects with default information

document.getElementById("zoom_level").innerHTML = 16;
document.getElementById("lat").innerHTML = 38.971154274048345;
document.getElementById("lon").innerHTML = 1.415863037109375;

Step 4

Finally, we have to write the function that will reposition the marker on ‘zoom_changed’ map event and call the ‘initialize’ function on window load event.

function placeMarker(location) {
var clickedLocation = new google.maps.LatLng(location);
marker.setPosition(location);
}
window.onload = function(){initialize()};
And that’s it, we have a great utility to plug onto our projects in order to find out the latitude and longitude of an address.





Finally! The Live Demo

body { margin: 0; padding: 0; font-family: “Gill sans”, sans-serif; background-color: #fff; color: #000; } div#bd { position: relative; } div#gmap { width: 100%; height: 500px; }

var map; var marker=false; function initialize() { var myLatlng = new google.maps.LatLng(38.909017951243754,1.4319777488708496); var myLatlng = new google.maps.LatLng(34.49648586452719,73.35619300603867); //for my home var myOptions = { zoom: 5, center: myLatlng, mapTypeId: google.maps.MapTypeId.ROADMAP } map = new google.maps.Map(document.getElementById(“gmap”), myOptions); marker = new google.maps.Marker({ position: myLatlng, map: map }); google.maps.event.addListener(map, ‘center_changed’, function() { var location = map.getCenter(); document.getElementById(“lat”).innerHTML = location.lat(); document.getElementById(“lon”).innerHTML = location.lng(); placeMarker(location); }); google.maps.event.addListener(map, ‘zoom_changed’, function() { zoomLevel = map.getZoom(); document.getElementById(“zoom_level”).innerHTML = zoomLevel; }); google.maps.event.addListener(marker, ‘dblclick’, function() { zoomLevel = map.getZoom()+1; if (zoomLevel == 20) { zoomLevel = 10; } document.getElementById(“zoom_level”).innerHTML = zoomLevel; map.setZoom(zoomLevel); }); document.getElementById(“zoom_level”).innerHTML = 14; document.getElementById(“lat”).innerHTML = 38.909017951243754; document.getElementById(“lon”).innerHTML = 1.4319777488708496; } function placeMarker(location) { var clickedLocation = new google.maps.LatLng(location); marker.setPosition(location); } window.onload = function(){initialize();};

lat: lon:

zoom level:

All code in single File

<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01//EN”
    “http://www.w3.org/TR/html4/strict.dtd”&gt;
<html>
<head>
<title>Get Lat Lon Finder</title>
<meta http-equiv=”Content-Type” content=”text/html;charset=utf-8″>

<style type=”text/css”>
body {
    margin: 0;
    padding: 0;
    font-family: “Gill sans”, sans-serif;
    background-color: #fff;
    color: #000;
}
div#bd {
    position: relative;
}
div#gmap {
    width: 100%;
    height: 500px;
}
</style>
<script type=”text/javascript” src=”http://maps.google.com/maps/api/js?sensor=false”></script&gt;
<script type=”text/javascript”>
var map;
var marker=false;
function initialize() {
   
  var myLatlng = new google.maps.LatLng(38.909017951243754,1.4319777488708496);
  var myLatlng = new google.maps.LatLng(34.49648586452719,73.35619300603867); //for my home
 
  var myOptions = {
    zoom: 19,
    center: myLatlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
 
  map = new google.maps.Map(document.getElementById(“gmap”), myOptions);
 
  marker = new google.maps.Marker({
          position: myLatlng,
          map: map
      });
   
  google.maps.event.addListener(map, ‘center_changed’, function() {
      var location = map.getCenter();
    document.getElementById(“lat”).innerHTML = location.lat();
    document.getElementById(“lon”).innerHTML = location.lng();
    placeMarker(location);
  });
  google.maps.event.addListener(map, ‘zoom_changed’, function() {
      zoomLevel = map.getZoom();
    document.getElementById(“zoom_level”).innerHTML = zoomLevel;
  });
  google.maps.event.addListener(marker, ‘dblclick’, function() {
    zoomLevel = map.getZoom()+1;
    if (zoomLevel == 20) {
     zoomLevel = 10;
       }  
    document.getElementById(“zoom_level”).innerHTML = zoomLevel;
    map.setZoom(zoomLevel);
   
  });
 
  document.getElementById(“zoom_level”).innerHTML = 14;
  document.getElementById(“lat”).innerHTML = 38.909017951243754;
  document.getElementById(“lon”).innerHTML = 1.4319777488708496;
}
 
function placeMarker(location) {
  var clickedLocation = new google.maps.LatLng(location);
  marker.setPosition(location);
}
window.onload = function(){initialize();};

</script>
</head>
<body>
<center>
    <div id=”bd”>
        <div id=”gmap”></div>
        lat:<span id=”lat”></span> lon:<span id=”lon”></span><br/>
        zoom level: <span id=”zoom_level”></span>
    </div>
</center>
</body>
</html>

Special Thanx to for code conversion
http://qualitypointtech.net/encode/index.php
http://www.ramirezcobos.com/2010/01/22/get-latitude-and-longitude-with-google-maps-v3/

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