hi,
in mapserver, you'd have to add something to make getfeatureinfo work
('ows_include_items') is that the case in geoserver?
have you checked if the &X , &Y url parameters look like the correct
pixel values.
then what does postgres log for the query from geoserver?
-bOn 7/18/07, Marc Desharnais <[EMAIL PROTECTED]> wrote: > > > Hi all, > > I wish to update my problem in hope to get more precise help. > I checked what is returned by the server and every time and do a manual > attempt by entering the request URL myself I get "no features were found". > Is it because of the server or from OpenLayers? > I tried to change the name of the layer in the reuqest to something random, > and I received a message telling that the feature type was not found. > > So I guess that it is querying the server with something that exists. But > it can't get any feature from the database. Again, if anyone has any > experience of OpenLayers getting layers from geoserver with PostGIS, please > tell me if there is anything to do in the database to make ot work. > > > Thank you :) > > Marc > > > Tim Schaub wrote: > > Hey Marc- > > Marc Desharnais wrote: > > To get the getfeatureInfo working. I get the loading message in the div > section 'nodeList'. The problem is that it never seems to get an answer. > I get the checkpoint popup when I click the map so I guess that this part > is executed well. But it stays forever with the loading message. > So probably "wmsLayer1.getFullRequestString" is not correct or my database > is not quite right... I just have a layer with points. > And I want to query information about thoise points in the database to > display it beside the map. > > Since you are making an asynchronous request for the GetFeatureInfo > results, you are subject to the same origin policies that browsers enforce. > > This means that your GetFeatureInfo request won't go anywhere unless it is > requested with the same protocol, from the same port, and on the same host > as the request that initiated your application (see [1]). > > If this sounds like your issue (i.e. you are making the request to > GeoServer on a different port than the request for the rest of your > application), see the FAQ on setting up a proxy host [2]. Note that if you > are using the proxy.cgi that comes in the OL examples directory, you will > need to add your host (and port) to the accepted list (in proxy.cgi). > > > > I'm using a local Geoserver with PostGIS. I would like to know too how the > getFeatureInfo query works. > Like if I have anything I have to do specially into the database. I figure > that it's querying the database for info, but what info? > Do I have to define what I want to be queried? Maybe this is off-topic > here sorry. > > Also, use Firebug to watch the requests go out. Copy the request and paste > in to a new tab to make sure you are getting what you expect. If you don't > get what you expect, then you'll have to troubleshoot your GeoServer > configuration. > > Hope that helps some, > Tim > > [1] > http://www.mozilla.org/projects/security/components/same-origin.html > [2] > http://trac.openlayers.org/wiki/FrequentlyAskedQuestions#ProxyHost > > > > > > I searched for informations on the UTIL package for openlayers but didn't > find real documentation about that. > > Please let me know if you would like more info. > > > Any help will be greatly appreciated. > Thanks in advance > > > > > > /******* CODE START HERE - !!! Note that this code is not complete. I > posted only the parts I found relevant. !!! > function init(){ > > var map = new OpenLayers.Map($('map'), {controls:[]} ); > OpenLayers.IMAGE_RELOAD_ATTEMPTS = 5; > var yahooLayer = new OpenLayers.Layer.Yahoo( > "Globe (Yahoo)", {reproject: "true"} ); > map.addLayer(yahooLayer); > var wmsLayer1 = new OpenLayers.Layer.WMS( > "POSTGIS villes", > "http://ulysse.cmc.ec.gc.ca:8081/geoserver/wms";, > { > layers: 'topp:villes', > format: 'image/png' , transparent: "true", reproject: "true"} > ); > map.addLayer(wmsLayer1); > map.addControl(new > OpenLayers.Control.LayerSwitcher()); > > map.addControl(new OpenLayers.Control.NavToolbar()); > map.addControl(new OpenLayers.Control.PanZoomBar($('map'))); > map.addControl(new > OpenLayers.Control.MouseDefaults()); > map.addControl(new OpenLayers.Control.Scale($('scale'))); > map.addControl(new > OpenLayers.Control.MousePosition({element: > $('position')})); > > map.events.register('click', map, function (e) { > OpenLayers.Util.getElement('nodeList').innerHTML = > "<b>Téléchargement d'information...<br> Veuillez Attendre SVP...</b>"; > var url = wmsLayer1.getFullRequestString({ > REQUEST: "GetFeatureInfo", > EXCEPTIONS: "application/vnd.ogc.se_xml", > BBOX: wmsLayer1.map.getExtent().toBBOX(), > X: e.xy.x, > Y: e.xy.y, > INFO_FORMAT: 'text/html', > QUERY_LAYERS: wmsLayer1.params.LAYERS, > WIDTH: wmsLayer1.map.size.w, > HEIGHT: wmsLayer1.map.size.h}); > OpenLayers.loadURL(url, '', this, setHTML); > > alert("Checkpoint"); > > Event.stop(e); > }); > > > } > function setHTML(response) { > alert("before answer"); > OpenLayers.Util.getElement('nodeList').innerHTML = > response.responseText; > alert("after answer"); > } > > /********* CODE STOPS HERE > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > > > > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > > _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
