overviewmap.html
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<html>
<head>
<title>Overview Map Example</title>
<link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
<script src="../lib/OpenLayers.js" type="text/javascript"></script>
<style>
#map1 {
width: 500px;
height: 300px;
border: 1px solid gray;
}
#map2 {
width: 500px;
height: 300px;
border: 1px solid gray;
}
</style>
</head>
<body>
<h1 id="title">Overview Map</h1>
<div id="tags">
</div>
<p id="shortdesc">
Enable a small Overview Map that moves/interacts with your main map.
</p>
<div id="map1"></div>
<p>The above map has an overview map control that is created with
the default options. Much like a regular map, the map contained by
the overview map control defaults to a geographic projection.</p>
<div id="map2"></div>
<p>The second map has an overview map control that is created with
non-default options. In this case, the mapOptions property of the
control has been set to use non-default projection related properties.
In addition, any other properties of the overview map control can be
set in this way.</p>
<script defer="defer" type="text/javascript">
// create the top map (with default overview map control)
var map1 = new OpenLayers.Map('map1');
var ol = new OpenLayers.Layer.WMS(
"OpenLayers WMS",
"http://labs.metacarta.com/wms/vmap0",
{layers: 'basic'}
);
var jpl = new OpenLayers.Layer.WMS(
"NASA Global Mosaic",
"http://t1.hypercube.telascience.org/cgi-bin/landsat7",
{layers: "landsat7"}
);
map1.addLayers([ol, jpl]);
map1.addControl(new OpenLayers.Control.LayerSwitcher());
// create an overview map control with the default options
var overview1 = new OpenLayers.Control.OverviewMap();
map1.addControl(overview1);
map1.setCenter(new OpenLayers.LonLat(0, 0), 2);
// expand the overview map control
overview1.maximizeControl();
// create the bottom map (with advanced overview map control)
var mapOptions = {
maxExtent: new OpenLayers.Bounds(33861, 717605, 330846, 1019656),
maxResolution: 296985/1024,
projection: "EPSG:2805",
units: "m"
};
var map2 = new OpenLayers.Map('map2', mapOptions);
var bos = new OpenLayers.Layer.WMS(
"Boston",
"http://boston.freemap.in/cgi-bin/mapserv",
{
map: '/www/freemap.in/boston/map/gmaps.map',
layers: 'border,water,roads,rapid_transit,buildings',
format: 'png'
}
);
map2.addLayers([bos]);
map2.addControl(new OpenLayers.Control.LayerSwitcher());
// create an overview map control with non-default options
var controlOptions = {
mapOptions: mapOptions
}
var overview2 = new OpenLayers.Control.OverviewMap(controlOptions);
map2.addControl(overview2);
map2.setCenter(new OpenLayers.LonLat(182500, 868500), 3);
// expand the overview map control
overview2.maximizeControl();
</script>
</body>
</html>