[OpenLayers-Users] getFeatureInfo projection

[Alexandre Dube]

Lorsque vous utilisez le delete, peser sur "esc" pour désélectionner 
tous les features.

Alexandre

Alexandre.Laplante at statcan.gc.ca wrote:
> I'm still stumped on this one. Does anyone know what a Scale of -1 
> means? Or a Cellsize of 0? Is openlayers sending the coordinates in 
> meters, while mapserver is expecting them in latlon?
>  
> Thanks again,
> Alexandre Laplante
>
>     -----Original Message-----
>     *From:* Laplante, Alexandre - AGRI/AGRI
>     *Sent:* July 23, 2009 2:25 PM
>     *To:* 'users at openlayers.org'
>     *Subject:* FW: [OpenLayers-Users] getFeatureInfo projection
>
>     Yeah, I added getName because I have multiple layers, and I needed
>     to know which one is being queried. Should have mentioned that. 
>
>         -----Original Message-----
>         *From:* Dave Winfield [mailto:winfield.dave at gmail.com]
>         *Sent:* July 21, 2009 12:10 PM
>         *To:* Alexandre.Laplante at statcan.gc.ca
>         *Subject:* Re: [OpenLayers-Users] getFeatureInfo projection
>
>         I'm not totally sure, but what is map.getName() returning? 
>         You want it to be the layer that's on your wms layer.
>
>         On Tue, Jul 21, 2009 at 11:52 AM,
>         <Alexandre.Laplante at statcan.gc.ca
>         <mailto:Alexandre.Laplante at statcan.gc.ca>> wrote:
>
>             Hello,
>
>             I have a map in EPSG:42304 projection. I'm trying to have
>             a getFeatureInfo return information about clicked
>             features, but there are always 0 results. I'm using
>             mapserver, and when I use a template header with:
>
>                                     <tr>
>                                              <th>Bounding box</th>
>                                             
>             <td>[minx],[miny],[maxx],[maxy]</td>
>                                      </tr>
>                                      <tr>
>                                              <th>Image Coordinates</th>
>                                              <td>[img.x], [img.y]</td>
>                                      </tr>
>                                      <tr>
>                                              <th>Map Coordinates</th>
>                                              <td>[mapx], [mapy]</td>
>                                      </tr>
>                                      <tr>
>                                              <th>Number of results</th>
>                                              <td>[nr]</td>
>                                      </tr>
>                                      <tr>
>                                              <th>Scale</th>
>                                              <td>[scale]</td>
>                                      </tr>
>                                      <tr>
>                                              <th>Cellsize</th>
>                                              <td>[cellsize]</td>
>                                      </tr>
>
>             I get back something like:
>
>             *Bounding box*
>             1593723.472943,6433235.946381,1740788.283491,6511201.698335
>             *Image Coordinates* 227, 115
>             *Map Coordinates* 1663128.279584, 6476040.672944
>             *Number of results* 0
>             *Scale* -1.000000
>             *Cellsize* 0.000000
>             Is this an issue of projection? What does a scale of -1 mean?
>
>             This is the relevent openlayers javascript:
>             map.events.register('click', map, function (e) {
>                        
>             OpenLayers.Util.getElement('nodeList').innerHTML =
>             "Loading... please wait...";
>
>                         var url =  wms.getFullRequestString({
>                                         REQUEST: "GetFeatureInfo",
>                                         EXCEPTIONS:
>             "application/vnd.ogc.se_xml",
>                                         BBOX:
>             wms.map.getExtent().toBBOX(),
>                                         X: e.xy.x,
>                                         Y: e.xy.y,
>                                         INFO_FORMAT: 'text/html',
>                                         //QUERY_LAYERS:
>             wms.params.LAYERS,
>                                         QUERY_LAYERS: map.getName(),
>                                         WIDTH: wms.map.size.w,
>                                         HEIGHT: wms.map.size.h});
>                         OpenLayers.loadURL(url, '', this, setHTML);
>                         OpenLayers.Event.stop(e);
>                   });
>                 function setHTML(response) {
>                     OpenLayers.Util.getElement('nodeList').innerHTML =
>             response.responseText;
>                 }
>
>             Thank you,
>             Alexandre Laplante
>
>
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>
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-- 
Alexandre Dubé
Mapgears
www.mapgears.com