fb35f555be
OSGeo-hosted vmap0.tiles.osgeo.org server. git-svn-id: http://svn.openlayers.org/trunk/openlayers@10708 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
35 lines
1.3 KiB
HTML
35 lines
1.3 KiB
HTML
<html>
|
|
<head>
|
|
<title>Setting a visual Extent</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"></script>
|
|
</head>
|
|
<body>
|
|
<h1 id="title">Setting a Visual Extent</h1>
|
|
<p id='shortdesc'>
|
|
Use a boxes layer to visually display the area of interest indicated by a user.
|
|
</p>
|
|
<p>
|
|
Because the ability to set the map to a given extent is limited by the
|
|
current resolutions available, zoomToExtent will not always set the map to
|
|
exactly the right extent. In order to visually annotate the actual extent,
|
|
this example, will use the Boxes layer to visually describe the desired
|
|
extent as well as setting the map extent.
|
|
</p>
|
|
<div style="width:100%; height:75%" id="map"></div>
|
|
<script defer="defer" type="text/javascript">
|
|
var map = new OpenLayers.Map('map');
|
|
var bounds = new OpenLayers.Bounds(-45,-45, 0, 45);
|
|
var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
|
|
"http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
|
|
map.addLayer(wms);
|
|
map.zoomToExtent(bounds);
|
|
var boxes = new OpenLayers.Layer.Boxes("boxes");
|
|
var box = new OpenLayers.Marker.Box(bounds);
|
|
boxes.addMarker(box);
|
|
map.addLayer(boxes);
|
|
</script>
|
|
</body>
|
|
</html>
|