[OpenLayers-Users] getFeatureInfo projection
Alexandre.Laplante at statcan.gc.ca
Alexandre.Laplante at statcan.gc.ca
Tue Jul 21 11:52:25 EDT 2009
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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