[OpenLayers-Users] event handler on top of google map
Alessandro Ferrucci
alessandroferrucci at gmail.com
Fri Oct 23 07:48:09 EDT 2009
Hello anyone have any ideas why I'm not getting features back from the
GetFeatureInfo when I use the google hybride as base map?
thanks!
alessandro ferrucci
On Wed, Oct 21, 2009 at 1:17 PM, Alessandro Ferrucci <
alessandroferrucci at gmail.com> wrote:
> Hello,
>
> I have google hybrid as base map, I have some POI's that I store in my own
> postGIS database that I overlay on top of google base map. I want to attach
> click mouse handler on POI layer for GetFeatureInfo. Whenever I click the
> mouse, I don't get any features back. I think it has something to do with
> projection and mouse location ? ...not quite sure.
>
> Just as an aside, when I view my POI layer using Geoserver's demo
> functionality, it gets back all features fine, this is reason I think it has
> something to do with projection that I attach to my mouse handler or
> something.
>
> here is relevant code:
>
> <html>
>
> <head>
> <title>CIRA GIS</title>
> <script src="http://openlayers.org/api/OpenLayers.js"
> type="text/javascript"></script>
> <link rel="stylesheet" href="../css/google.css" type="text/css" />
> <script src="
> http://maps.google.com/maps?file=api&v=2&sensor=true&key=ABQIAAAAo2c5r7VgSxo43IHrZeBAoBQamh927W1qenomYTPDD5XN6kDJqBTSmynWaZ9MUgwOTtaOkIJeFZSMjQ<http://maps.google.com/maps?file=api&v=2&sensor=true&key=ABQIAAAAo2c5r7VgSxo43IHrZeBAoBQamh927W1qenomYTPDD5XN6kDJqBTSmynWaZ9MUgwOTtaOkIJeFZSMjQ>"
> type="text/javascript"></script>
>
> <script defer="defer" type="text/javascript">
>
> function setHTML(response){
> document.getElementById('nodelist').innerHTML =
> response.responseText;
> };
>
> function init()
> {
>
> var options = {
> projection: new OpenLayers.Projection("EPSG:900913"),
> displayProjection: new OpenLayers.Projection("EPSG:4326"),
> units: "m",
> numZoomLevels: 30,
> maxResolution: 156543.0339,
> maxExtent: new OpenLayers.Bounds(-20037508, -20037508,
> 20037508, 20037508.34),
> controls: []
> };
>
> var map = new OpenLayers.Map( 'map', options );
>
>
> var cira_addresses_layer = new OpenLayers.Layer.WMS(
> "ACS Addresses",
> "localhost:8080/geoserver/wms",
> {
> layers: 'cira:addresses',
> transparent: true
> },
> {buffer:0, ratio: 1, transitionEffect: 'resize', isBaseLayer:
> false}
> );
>
> var ghyb = new OpenLayers.Layer.Google(
> "Google Hybrid",
> {sphericalMercator: true, type: G_HYBRID_MAP, numZoomLevels:
> 20}
> );
>
>
> // build up all controls
> map.addControl(new OpenLayers.Control.PanZoomBar({ position:
> new OpenLayers.Pixel(2, 15) }));
> map.addControl(new OpenLayers.Control.Navigation());
> map.addControl(new OpenLayers.Control.Scale($('scale')));
> map.addControl(new OpenLayers.Control.MousePosition({element:
> $('location')}));
> map.addControl(new OpenLayers.Control.LayerSwitcher());
>
> map.events.register('click', map, function (e) {
> document.getElementById('nodelist').innerHTML =
> "Loading... please wait...";
> var params = {
> REQUEST: "GetFeatureInfo",
> EXCEPTIONS: "application/vnd.ogc.se_xml",
> BBOX: map.getExtent().toBBOX(),
> X: e.xy.x,
> Y: e.xy.y,
> INFO_FORMAT: 'text/html',
> QUERY_LAYERS: map.layers[1].params.LAYERS,
> FEATURE_COUNT: 50,
> Layers: 'cira:addresses',
> Styles: '',
> Srs: 'EPSG:4326',
> WIDTH: map.size.w,
> HEIGHT: map.size.h,
> format: 'image/jpeg'};
> //updateFeatureInfoFilters(params);
> OpenLayers.loadURL("
> http://localhost:8080/geoserver/wms", params, this, setHTML, setHTML);
> OpenLayers.Event.stop(e);
> // alert("layer: " + map.layers[1].params.LAYERS);
> alert("mouse pos: " + e.xy);
> });
>
> map.addLayers([ghyb,cira_addresses_layer]);
>
> map.zoomToMaxExtent();
> }
> </script>
>
> </head>
>
> <body onload="init()">
> <div style="width:100%; height:100%" id="map"></div>
> <div id="nodelist">
> <em>Click on the map to get feature info</em>
> </div>
> </body>
> </html>
>
>
> Thank you very much !
>
> --
> Signed,
> Alessandro Ferrucci
>
--
Signed,
Alessandro Ferrucci
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