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Removing example as the service has been discontinued.

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tschaub
2011-10-25 17:31:25 -06:00
parent 3e163910f7
commit 415c8f9e0c
2 changed files with 0 additions and 70 deletions
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38
examples/xyz-offset.html
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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>OpenLayers XYZ with Offset</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>
<script src="xyz-offset.js"></script>
</head>
<body onload="init()">
<h1 id="title">XYZ Layer with Offset</h1>
<div id="tags">
XYZ, layer, tile
</div>
<div id="shortdesc">Using a limited set of levels from an XYZ layer with zoomOffset.</div>
<div id="map" class="smallmap"></div>
<div id="docs">
<p>
The XYZ layer allows a zoomOffset to be set if you want to have
a maximum resolution for the map that differs from the maxiumum
resolution of the cached tiles. This example uses only 6 of the
levels in the cache, starting with the ninth level (index of 8)
in the cache. To do this, the layer is constructed with a
zoomOffset of 8. When the map zoom level is zero, the level
with index 8 will be requested from the cache.
</p>
<p>
See the <a href="xyz-offset.js" target="_blank">
xyz-offset.js source</a> to see how this is done.
</p>
</div>
</body>
</html>

32
examples/xyz-offset.js
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var map, layer;
// called on body load
function init() {
var extent = new OpenLayers.Bounds(
-13758743.4295939, 5591455.28887228, -13531302.3472101 , 5757360.4178881
);
map = new OpenLayers.Map({
div: "map",
maxExtent: new OpenLayers.Bounds(
-128 * 156543.0339, -128 * 156543.0339,
128 * 156543.0339, 128 * 156543.0339
),
restrictedExtent: extent,
maxResolution: 611.496226171875, // corresponds to level 8 in the cache
numZoomLevels: 6,
projection: new OpenLayers.Projection("EPSG:900913"),
units: "m",
layers: [
new OpenLayers.Layer.XYZ(
"ESRI",
"http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Portland/ESRI_LandBase_WebMercator/MapServer/tile/${z}/${y}/${x}",
{zoomOffset: 8} // since our map maxResolution differs from cache max resolution
)
]
});
map.zoomToExtent(extent);
}