[Qgis-developer] Re: Openlayers plugin and Virtual Earth (i.e.Bing Maps)

Fri Dec 3 03:49:51 EST 2010

Hi Pirmin,

Sorry about the wrong code. Here the right bing layer.

Noli

~~~~~~~~~~~~~~~
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>Bing Shaded Map</title>
    <style type="text/css">
        body {
            margin: 0;
        }
        #map {
            width: 100%;
            height: 100%;
        }
    </style>
    <script src="http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6.2&mkt=en-us"></script>
    <script src="OpenLayers.js"></script>
    <script type="text/javascript">
        var map;

        function init() {
            map = new OpenLayers.Map('map', {
                theme: null,
                controls: [],
                projection: new OpenLayers.Projection("EPSG:900913"),
		displayProjection: new OpenLayers.Projection("EPSG:4326"),
                units: "m",
                maxResolution: 156543.0339,
                maxExtent: new OpenLayers.Bounds(-20037508.34,
-20037508.34, 20037508.34, 20037508.34)
            });
	    var shaded = new OpenLayers.Layer.VirtualEarth("Shaded", {
	                type: VEMapStyle.Shaded, numZoomLevels:
19,'sphericalMercator': true}
		);	
	    map.addLayer(shaded);
            map.getLayersBy('name','Shaded')[0].mapObject.Resize(500,500);
            map.setCenter(new OpenLayers.LonLat(0, 0), 2);
        }

    </script>
  </head>
  <body onload="init()">
    <div id="map" class="bigmap" style="width: 800px; height: 600px;"></div>
  </body>
</html>

On 12/3/10, Noli Sicad <nsicad at gmail.com> wrote:
> Hi Pirmin,
>
>> I would try to omit the displayProjection in OpenLayers (as in
>> http://openlayers.org/dev/examples/bing.html) and change the QGIS
>> reprojection
>> to EPSG:54004  or whatever Bing's projection is.
>
> I deleted displayProjectiion and tried these codes.
>
> a) projection: new OpenLayers.Projection("EPSG:3857"),
> b) projection: new OpenLayers.Projection("EPSG:54004"),
>
> No avail. It did not change the alignment. It still off.
>
> There is example Spherical Mercator Layers, for overlaying Google,
> Yahoo, Microsoft, and other layers with WMS and TMS tiles (below). But
> the problem with this example, you can see the layers. It just one at
> the time.
>
> http://openlayers.org/dev/examples/spherical-mercator.html
>
> I think this is the same problem with google - bing map  and wms - bing
>
> http://www.mail-archive.com/openlayers-dev@lists.osgeo.org/msg00047.html
>
> According to this post below, Bing uses EPSG:102113 same as EPSG:900913
>
> http://geoux.wordpress.com/2009/07/31/bing-oh/
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Another thing, I tried to digitise /trace bing map. The new shapefile
> layer is funny. It will not follow the bing map projection, zooming
> and unzooming the newly created shapefile layer is off from the object
> being traced. While doing this in google map, it is working correctly.
>
> Noli
>