Google Maps Overlays






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Google Maps Overlays



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Add a marker to the Google map:




function myMap()
{
var myCenter=new google.maps.LatLng(51.508742,-0.120850);
var mapOptions = {
center: myCenter,
zoom:5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};

var map = new google.maps.Map(document.getElementById("googleMap"),mapOptions);

var marker = new google.maps.Marker({
position: myCenter,
});

marker.setMap(map);
}

Google Maps - Overlays


Overlays are objects on the map that are bound to latitude/longitude
coordinates.


Google Maps has several types of overlays:



  • Marker - Single locations on a map. Markers can also display custom icon images

  • Polyline - Series of straight lines on a map

  • Polygon - Series of straight lines on a map, and the shape is "closed"

  • Circle and Rectangle

  • Info Windows - Displays content within a popup balloon on top of a map

  • Custom overlays



Google Maps - Add a Marker


The Marker constructor creates a marker. (Note that the position property
must be set for the marker to display).


Add the marker to the map by using the setMap()
method:



Example



var marker = new google.maps.Marker({position: myCenter});

marker.setMap(map);

Try it Yourself »





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Google Maps - Animate the Marker


The example below shows how to animate the marker with the animation
property:



Example



var
marker = new google.maps.Marker({
  position:myCenter,
  animation:google.maps.Animation.BOUNCE
  });

marker.setMap(map);

Try it Yourself »


Google Maps - Icon Instead of Marker


The example below specifies an image (icon) to use instead of the default marker:



Example



var marker=new google.maps.Marker({
  position:myCenter,
  icon:'pinkball.png'
  });

marker.setMap(map);

Try it Yourself »


Google Maps - Polyline


A Polyline is a line that is drawn through a series of coordinates in an
ordered sequence.


A polyline supports the following properties:



  • path - specifies several latitude/longitude coordinates for the line

  • strokeColor - specifies a hexadecimal color for the line (format: "#FFFFFF")

  • strokeOpacity - specifies the opacity of the line (a value between 0.0 and 1.0)

  • strokeWeight - specifies the weight of the line's stroke in pixels

  • editable - defines whether the line is editable by users (true/false)



Example



var myTrip = [stavanger,amsterdam,london];
var flightPath = new google.maps.Polyline({
  path:myTrip,
  strokeColor:"#0000FF",
  strokeOpacity:0.8,
  strokeWeight:2
});

Try it Yourself »


Google Maps - Polygon


A Polygon is similar to a Polyline in that it consists of a
series of coordinates in an ordered sequence. However, polygons are designed to define regions within a closed loop.


Polygons are made of straight lines, and the shape is "closed" (all the lines
connect up).


A polygon supports the following properties:



  • path - specifies several LatLng coordinates for the line (first and last coordinate are equal)

  • strokeColor - specifies a hexadecimal color for the line (format: "#FFFFFF")

  • strokeOpacity - specifies the opacity of the line (a value between 0.0 and 1.0)

  • strokeWeight - specifies the weight of the line's stroke in pixels

  • fillColor - specifies a hexadecimal color for the area within the enclosed region (format: "#FFFFFF")

  • fillOpacity - specifies the opacity of the fill color (a value between 0.0 and 1.0)

  • editable - defines whether the line is editable by users (true/false)



Example



var myTrip = [stavanger,amsterdam,london,stavanger];
var flightPath = new google.maps.Polygon({
  path:myTrip,
  strokeColor:"#0000FF",
  strokeOpacity:0.8,
  strokeWeight:2,
  fillColor:"#0000FF",
  fillOpacity:0.4
});

Try it Yourself »


Google Maps - Circle


A circle supports the following properties:



  • center - specifies the google.maps.LatLng of the center of the circle

  • radius - specifies the radius of the circle, in meters

  • strokeColor - specifies a hexadecimal color for the line around the circle (format: "#FFFFFF")

  • strokeOpacity - specifies the opacity of the stroke color (a value between 0.0 and 1.0)

  • strokeWeight - specifies the weight of the line's stroke in pixels

  • fillColor - specifies a hexadecimal color for the area within the circle (format: "#FFFFFF")

  • fillOpacity - specifies the opacity of the fill color (a value between 0.0 and 1.0)

  • editable - defines whether the circle is editable by users (true/false)



Example



var myCity = new google.maps.Circle({
  center:amsterdam,
  radius:20000,
  strokeColor:"#0000FF",
  strokeOpacity:0.8,
  strokeWeight:2,
  fillColor:"#0000FF",
  fillOpacity:0.4
});

Try it Yourself »


Google Maps - InfoWindow


Show an InfoWindow with some text content for a marker:



Example



var infowindow = new google.maps.InfoWindow({
  content:"Hello World!"
  });

infowindow.open(map,marker);

Try it Yourself »




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