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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: Non-Geographic Projection</title>
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<style type="text/css">
#map {
width: 100%;
height: 100%;
border: 0px;
padding: 0px;
}
</style>
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var lat = 900863;
var lon = 235829;
var zoom = 6;
var map, layer;
function init(){
map = new OpenLayers.Map( 'map' );
var basemap = 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',
transparent: 'off'
},
// These are the important parts for creating a non-epsg:4326
// map: Maxextent is the boundary of the map/tile loading area,
// maxResolution is the units/pixel at the highest zoom, and
// projection is the projection to be used in WMS/WFS Requests.
{
maxExtent: new OpenLayers.Bounds(33861, 717605, 330846, 1019656),
maxResolution: 296985/1024, // Another alternative is 'auto', which
// will automatically fit the map: you can
// then check map.baseLayer.resolutions[0] for
// a reasonable value.
projection:"EPSG:2805", // Used in WMS/WFS requests.
units: "m" // Only neccesary for working with scales.
} );
map.addLayer(basemap);
map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.addControl(new OpenLayers.Control.ScaleLine());
}
</script>
</head>
<body onload="init()">
<h1 id="title">Layer Projections</h1>
<div id="tags">
projection, reprojection, epsg, basic
</div>
<p id="shortdesc">
Use different (not default) projections with your map
</p>
<div id="map" class="smallmap"></div>
<p>When using alternative projections, you still use OpenLayers.LonLat objects, even though
the properties are actually X/Y values at that point.</p>
</body>
</html>
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