110 lines
4.1 KiB
HTML
110 lines
4.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<title>Using Proj4JS for vector reprojection</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 type="text/javascript" src="http://trac.osgeo.org/proj4js/export/2080/trunk/lib/proj4js-compressed.js"></script>
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<script type="text/javascript" src="http://spatialreference.org/ref/epsg/31467/proj4js/"></script>
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<script type="text/javascript" src="../lib/OpenLayers.js"></script>
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<script type="text/javascript" src="./using-proj4js.js"></script>
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<style type="text/css">
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ul {
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width: 300px;
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float: left;
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}
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ul li {
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list-style: none;
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margin-bottom: .2em;
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}
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input {
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width: 250px;
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}
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#shortdesc {
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margin-bottom: .5em;
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}
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#map {
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width: 256px;
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height: 256px;
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float: left;
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margin-right: .2em;
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}
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#attribution,
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#mouse-position-31467,
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#mouse-position-4326 {
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float: left;
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clear: left;
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font-size: .8em;
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color: #444;
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}
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.emph {
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font-weight: bold;
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}
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</style>
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</head>
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<body onload="init();">
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<h1 id="title">Using Proj4JS for vector reprojection</h1>
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<div id="tags">
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projection, proj, proj4js, reprojection, reproject,
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transform, transformation, epsg, srs
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</div>
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<p id="shortdesc">
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This example shows how to reproject vector features within
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OpenLayers. The baselayer shows Germany in the projection
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EPSG:31467 (GK 3). When one clicks on the buttons, features with
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geometries originally in EPSG:4326 will be transformed to the
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projection of the map on-the-fly.
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</p>
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<p>
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The features are internally reprojected with the JavaScript library
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<a href="http://proj4js.org/">Proj4JS</a>. Please note that usually
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you would not inlude Proj4JS the way it is done in this example.
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In a production environment you would furthermore have a local copy
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of the Proj4JS-projection definition that is hotlinked in this
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example.
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</p>
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<div id="map">
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</div>
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<ul>
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<li>
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<input type="button" value="Add Cologne (~ 6.97, 50.95)"
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onclick="addVector(6.966667, 50.95, this);"
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id="btnCologne">
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</li>
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<li>
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<input type="button" value="Add Berlin (~ 13.40, 52.50)"
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onclick="addVector(13.398889, 52.500556, this);"
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id="btnBerlin">
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</li>
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<li>
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<input type="button" value="Add Hamburg (~ 10.00, 53.57)"
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onclick="addVector(10.001389, 53.565278, this);"
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id="btnHamburg">
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</li>
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<li>
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<input type="button" value="Add Munich (~ 11.57, 48.13)"
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onclick="addVector(11.566667, 48.133333, this);"
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id="btnMunich">
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</li>
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<li>
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<input type="button" value="Add country outline (polygon)"
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onclick="addOutline(this);" id="btnGermany">
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</li>
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<li>
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<input type="button" value="...clear vector features"
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onclick="clearVectors();">
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</li>
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<li>
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<div id="status">
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</div>
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</li>
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</ul>
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<div id="attribution"></div>
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<div id="mouse-position-4326"></div>
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<div id="mouse-position-31467"></div>
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</body>
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</html>
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