On Aug 8, 2010, at 7:02 PM, ext ilias kanellos wrote:
> Hello developers,
>
> I am trying to do a basic setup of a map with some base layers and a few
> navigation controls. I've started by trying out only a WMS and a Virtual
> Earth layer. I also added a layer switcher control, and I tried setting the
> basic map navigation keys. It all seems to work for the WMS layer, but on the
> Virtual earth layer it seems that only zooming is possible and it won't pan.
> What's more, it seems that the Virtual earth layer isn't "following" any
> panning that is done when WMS is selected. Instead everytime I change to the
> Virtual Earth layer the map centers on a fixed position with only the zoom
> level changed. Can anyone point out where the problem might be?
"""
var map = new OpenLayers.Map('map');
var layer = new OpenLayers.Layer.VirtualEarth("Virtual Earth",
{
sphericalMercator: true,
maxExtent: new
OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34)
});
map.addLayer(layer);
map.zoomToMaxExtent();
As you can see from the maxExtent parameter sent in the constructor of the
layer, the coordinates stretch from -20037508.34 to 20037508.34 in each
direction.
"""
-- http://docs.openlayers.org/library/spherical_mercator.html
> My code looks like this:
>
>
> //Creating a new map object
> var newMap = new OpenLayers.Map(divId,
> {
> controls: [],
> projection: "EPSG:4326"
> }
> );
>
> //Creating wms url table
> var urlArray =
> ["http://t1.labs.metacarta.com/wms-c/Basic.py";,
>
> "http://t2.labs.metacarta.com/wms-c/Basic.py";,
>
> "http://t3.labs.metacarta.com/wms-c/Basic.py";,
>
> "http://t4.labs.metacarta.com/wms-c/Basic.py";];
>
> //Creating a WMS layer
>
> var wms = new OpenLayers.Layer.WMS("WMS", urlArray,
> {
> layers: 'basic',
> displayOutsideMaxExtent: true
> }
> );
>
> //Creating a virtual earth layer
> var VEhybrid = new
> OpenLayers.Layer.VirtualEarth("Virtual Earth",
> {
> type: VEMapStyle.Hybrid,
> sphericalMercator: true
> }
> );
>
> //Setting layers and starting zoom
> newMap.addLayers([wms, VEhybrid]);
> newMap.zoomTo(1);
>
>
> //Adding map controls
> newMap.addControl(new OpenLayers.Control.LayerSwitcher());
> newMap.addControl(new
> OpenLayers.Control.PanZoomBar({zoomWorldIcon:true}));
> newMap.addControl(new OpenLayers.Control.Navigation
> (
> {
> zoomBoxEnabled: true,
> zoomWheelEnabled: true,
> zoomBoxKeyMask:
> OpenLayers.Handler.MOD_SHIFT,
> autoActivate: true
>
> }
> )
> );
> newMap.addControl(new OpenLayers.Control.MousePosition());
>
> ------------------------------------------------------------------------------------------------------------------------------------
>
> I'm sorry if this topic is novice, but i'm a newbie to openlayers and i
> couldn't find any answer to this.
> Also, it seemed to me that the open layers example page had a similar problem
> when using WMS and bing maps together.
> Thank you for your help
> <ATT00001..txt>
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