[OpenLayers-Users] Query with projection other than 4326

[Alexandre Dube]

Found out that EPSG:32198 is in meters.  I was using degrees for my 
extent. 

Thanks Arnd,

Arnd Wippermann wrote:
> Hi,
>
> It is likely a problem with your mapfile configuration. If you use
> projection EPSG:32198 for your OpenLayers map than the BBOX values will be
> in this projection. OpenLayers is only responsible for creating the
> querystring using the projection of the map. 
>
> You can take the value from your input field
> "document.getElementById('urlTextInput').value" and request it direct with
> your internet explorer.
>
> Arnd
>  
>
> -----Ursprüngliche Nachricht-----
> Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
> Auftrag von Alexandre Dube
> Gesendet: Donnerstag, 17. Juli 2008 16:37
> An: OpenLayers users mailing list
> Betreff: [OpenLayers-Users] Query with projection other than 4326
>
> Hi everybody,
>
>   I'm trying to find a way to get a GetFeatureInfo request working with a
> projection other than 4326.  I use a mapfile which has the epsg:32198
> projection.
>
>   My query returns no result if I use the proj. 32198.  I have to use
> 4326 and the result is not always correct, i-e if I click the "a" 
> region, I get the "b" region besides the "a" as a result...
>
>   I also tried an other query.  I added a vector layer to my map with the
> 32198 projection.  Using a bounding box, I query a WMS GetFeature and add
> the features to the vector layer ( which are polygons of regions).  The
> vector drawn looks like it's not in 32198 proj. but in 4326.  See code
> below.
>
>   To be short, my question is how can I use any type of query using an other
> projection than 4326 ?
>
> -------  a part of my GetFeature code sample ----------
>
>         var oControl = new OpenLayers.Control();
>         OpenLayers.Util.extend(oControl, {
>             draw: function () {
>                 this.box  = new OpenLayers.Handler.Box( oControl,
>                     {"done": this.notice},
>                     {keyMask: OpenLayers.Handler.MOD_SHIFT});
>                 this.box.activate();
>             },
>
>             notice: function (bounds) {
>                 OpenLayers.Util.getElement('nodeList').innerHTML =
>                 "Loading... please wait...";
>
>                 //Get LonLat from the 2 pixels of the Bounding Box
>                 var ll = oMap.getLonLatFromPixel(new OpenLayers.Pixel(
>                     bounds.left, bounds.bottom));
>                 var ur = oMap.getLonLatFromPixel(new OpenLayers.Pixel(
>                     bounds.right, bounds.top));
>
>                 var sUrl =  olMRC.getFullRequestString({
>                            REQUEST: "GetFeature",
>                            SERVICE: "WFS",
>                            TYPENAME: "NAME_OF_LAYER",
>                            VERSION: "1.0.0",
>                            MAXFEATURES: "50",
>                            BBOX: ll.lon + "," + ll.lat + "," +
>                                  ur.lon + "," + ur.lat
>                 });
>                 document.getElementById('urlTextInput').value = sUrl;
>
>                 OpenLayers.loadURL(sUrl, '', this, drawVectorMRC);
>             }
>         });
>
> function drawVectorMRC(response) {
>     var oFormatGML =  new OpenLayers.Format.GML();
>     var oFeatures = oFormatGML.read(response.responseText);
>    
>     olVectorMRC.destroyFeatures();
>     olVectorMRC.addFeatures(oFeatures);
> }
>
> --
> Alexandre Dubé
> Mapgears
> www.mapgears.com
>
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> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
>   


-- 
Alexandre Dubé
Mapgears
www.mapgears.com