Solved

Configuring a Google Map

Posted on 2014-03-15
4
593 Views
Last Modified: 2014-03-15
I'm trying to learn how to configure a Google Map API V3, and having some challenges.  I would like to be able to specify coordinates for the initial view of the map, which differ from coordinates of the marker.  I'd like the zoom control to zoom in on the marker, not on the initial coordinates of the map.  Can you edit the following code to achieve that?

<script>
jQuery(document).ready(function () {
	initmap("20.915927","-156.282931","Maui Tradewinds","4320 Une Place, Haiku","Hawaii")
	})
	function initmap(lat,lng,hname,add,city) {
		var secheltLoc = new google.maps.LatLng(lat,lng);
		var myMapOptions = {
			 zoom: 14
			,center: secheltLoc
			,mapTypeId: google.maps.MapTypeId.ROADMAP,disableDefaultUI: true,
			draggable: false, zoomControl: false, scrollwheel: false, disableDoubleClickZoom: true
		};
		var theMap = new google.maps.Map(document.getElementById("map_canvas"), myMapOptions);


	var contentString =hname+"<br>"	+add+"<br>"+city //Style here as you like
  var infowindow = new google.maps.InfoWindow({
      content: contentString
  });

  var marker = new google.maps.Marker({
     position: new google.maps.LatLng(lat,lng),
      map: theMap
  });
// Show the popup on load.
  google.maps.event.addListenerOnce(theMap, 'idle', function() {
   infowindow.open(theMap,marker);
});
  google.maps.event.addListener(marker, 'click', function() {
    infowindow.open(theMap,marker);
  });
	}
	</script>

Open in new window

0
Comment
Question by:ddantes
  • 2
  • 2
4 Comments
 
LVL 38

Expert Comment

by:Tom Beck
Comment Utility
You can change the initial map center after it's created by using panBy(). Add this line near the bottom of your initmap function to push the marker and infowindow down 100 pixels.

theMap.panBy(0, -100);

Then you can add an event listener to re-center the map to the marker location on zoom_changed. Of course you will have to enable the zoom control.

google.maps.event.addListener(theMap, 'zoom_changed', function() {
    theMap.setCenter(secheltLoc);
  });
0
 

Author Comment

by:ddantes
Comment Utility
Thank you.  I'll try this, but I was hoping the initial map center could be  set with a different initial  (lat, long) instead of panning by pixels.  If I use pixels, won't the result vary with the screen size and resolution of the user's device?
0
 
LVL 38

Accepted Solution

by:
Tom Beck earned 250 total points
Comment Utility
The "center" property controls where the center of the map will be. Set it to something other than the value passed to the function for the marker. Or, just set the latitude to something else.

var myMapOptions = {
                   zoom: 14
                  ,center: new google.maps.LatLng("20.9165",lng)
                  ,mapTypeId: google.maps.MapTypeId.ROADMAP,disableDefaultUI: true,
                  draggable: false, zoomControl: true, scrollwheel: false, disableDoubleClickZoom: true
            };
0
 

Author Comment

by:ddantes
Comment Utility
This is exactly what I hoped for.
0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Introduction If you're like most people, you have occasionally made a typographical error when you're entering information into an online form.  And to your consternation, the browser remembers the error, and offers to autocomplete your future entr…
Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now