Hello everybody,
Im absolutely new to OpenLayers For a start I wanted to check out the
possibilities of OpenLayers and display a geoJSON-Layer which should act as
the base layer. The layer uses the projection ESPSG 31468 / DHDN /
Gauss-Krüger 4.
To say it in plain words Im not too successfull in this, as nothing is
displayed.
I tried the following code which I copied from various sources:
<html>
<head>
<script src="Lib/OpenLayers.js"></script>
<script type="text/javascript">
var map;
function init(){
var lon = 4596651.93;
var lat = 5355977.11;
map = new
OpenLayers.Map('map', {
projection:
"EPSG:31468"
});
var kmlLayer = new
OpenLayers.Layer.Vector("GeoJSON", {
isBaseLayer:
true,
strategies:
[new OpenLayers.Strategy.Fixed()],
protocol: new
OpenLayers.Protocol.HTTP({
url: "flurstuecke.json",
format: new OpenLayers.Format.GeoJSON()
})
});
map.addLayers([kmlLayer]);
map.addControl(new
OpenLayers.Control.MousePosition());
map.setCenter(new
OpenLayers.LonLat(lon, lat), 10);
}
</script>
</head>
<body onload="init()">
<div id="map" style="width:300px;
height:300px;
border: 1px solid
black;"></div>
</body>
</html>
Can anybody tell me whats wrong with it?
By the way, how is it possible to retrive the extends of a geoJSON file?
Thank you all and regards
---
KnowHow - Helmut Seidel M.A.
Softwareentwicklung & Coaching
Gabelsbergerstraße 17 B
84034 Landshut
Telefon: 0871 9665230
Internet: www.knowhow-la.de
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