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<html xmlns="http://www.w3.org/1999/xhtml"> |
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<head> |
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<title>OpenLayers Buffer Example</title> |
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css" /> |
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<link rel="stylesheet" href="style.css" type="text/css" /> |
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<script src="../lib/OpenLayers.js"></script> |
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<script type="text/javascript"> |
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var lon = 0; |
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var lat = 0; |
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var zoom = 2; |
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var map, layer; |
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|
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function init(){ |
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map = new OpenLayers.Map( 'map' ); |
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layer = new OpenLayers.Layer.WMS( "0 buffer: OpenLayers WMS", |
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"http://labs.metacarta.com/wms/vmap0", |
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{layers: 'basic'}, {'buffer':0} ); |
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map.addLayer(layer); |
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layer = new OpenLayers.Layer.WMS( "1 buffer: OpenLayers WMS", |
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"http://labs.metacarta.com/wms/vmap0", |
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{layers: 'basic'}, {'buffer':1} ); |
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map.addLayer(layer); |
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layer = new OpenLayers.Layer.WMS( "4 buffer: OpenLayers WMS", |
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"http://labs.metacarta.com/wms/vmap0", |
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{layers: 'basic'}, {'buffer':4} ); |
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map.addLayer(layer); |
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map.addControl(new OpenLayers.Control.LayerSwitcher()) |
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map.setCenter(new OpenLayers.LonLat(lon, lat), zoom); |
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} |
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</script> |
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</head> |
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<body onload="init()"> |
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<h1 id="title">Buffer Example</h1> |
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|
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<div id="tags"> |
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</div> |
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|
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<p id="shortdesc"> |
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This example shows the use of the buffer layer option for any layer that inherits from OpenLayers.Layer.Grid. |
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</p> |
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|
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<div id="map" class="smallmap"></div> |
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|
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<div id="docs"> |
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Use the buffer property to control how many tiles are included |
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outside the visible map area. Default is 2. |
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</div> |
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</body> |
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</html> |
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