Thanks Kris Geusebroek. In my case, I loaded WMS building layer because WFS layer loading time is big. After loading WMS layer, I draw rectangle on the map. After drawing rectangle, what I want to do is that I want to get information for building features within the rectangle and I also would like to select or highlight features within the rectangle. What shoul I do?
Best regards, Myeonghun Jeong. 2009/4/25 Myeong Hun Jeong <[email protected]> > Hi Roald, > There are two things I want to know. > 1. How to send WFS requests to server with openlayers? I know the way to > load WFS layers when I initialize map, but after loading layers, I don't > know how to request WFS with Spatial Operations in OpenLayers. > > 2. I also want to know the way to display a WFS layer on my map that > automatically requests the correct features within the BBOX of the viewport? > > Thanks in advance. > > Best Regrards, > Myeonghun Jeong. > > > > 2009/4/25 Roald de Wit <[email protected]> > > Hi Myeonghun Jeong, >> >> Can you explain what you try to do? Do you want to display a WFS layer on >> your map that automatically requests the correct features within the BBOX of >> the viewport or do you want to have control over what BBOX you send to the >> WFS server and send your WFS 'manually'? >> >> Maybe it is good to have a look at some examples (type WFS in the search >> box): [1]. >> >> Regards, Roald >> >> [1] http://www.openlayers.org/dev/examples/ >> >> Myeong Hun Jeong wrote: >> >>> >>> Dear list. >>> >>> I want to know how to use openlayers when I request WFS with Spatial >>> Operations. >>> >>> For example, at GeoServer Demo Request page, I can fin >>> WFS_getFeatureBBox01.1.url and WFS_getFeatureBBox01.1.xml samples. >>> >>> So, the request is that >>> >>> >>> http://localhost:8888/geoserver/wfs?request=GetFeature&version=1.0.0&typeName=topp:states&propertyName=STATE_NAME,PERSONS&BBOX=-75.102613,40.212597,-72.361859,41.512517< >>> http://localhost:8888/geoserver/wfs?request=GetFeature&version=1.0.0&typeName=topp:states&propertyName=STATE_NAME,PERSONS&BBOX=-75.102613,40.212597,-72.361859,41.512517> >>> >>> >>> >>> or >>> >>> http://localhost:8888/geoserver/wfs >>> >>> <wfs:GetFeature service="WFS" version="1.1.0" >>> >>> xmlns:topp="http://www.openplans.org/topp"; >>> >>> xmlns:wfs="http://www.opengis.net/wfs"; >>> >>> xmlns:ogc="http://www.opengis.net/ogc"; >>> >>> xmlns:gml="http://www.opengis.net/gml"; >>> >>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >>> >>> xsi:schemaLocation="http://www.opengis.net/wfs >>> >>> http://schemas.opengis.net/wfs/1.1.0/wfs.xsd";> >>> >>> <wfs:Query typeName="topp:states"> >>> >>> <wfs:PropertyName>topp:STATE_NAME</wfs:PropertyName> >>> >>> <wfs:PropertyName>topp:PERSONS</wfs:PropertyName> >>> >>> <ogc:Filter> >>> >>> <ogc:BBOX> >>> >>> <ogc:PropertyName>the_geom</ogc:PropertyName> >>> >>> <gml:Envelope srsName=" >>> http://www.opengis.net/gml/srs/epsg.xml#4326";> >>> >>> <gml:lowerCorner>-75.102613 40.212597</gml:lowerCorner> >>> >>> <gml:upperCorner>-72.361859 41.512517</gml:upperCorner> >>> >>> </gml:Envelope> >>> >>> </ogc:BBOX> >>> >>> </ogc:Filter> >>> >>> </wfs:Query> >>> >>> </wfs:GetFeature> >>> >>> >>> But when I use openlayers, how to request thses requests exactly? >>> >>> For instance, when I request GetFeatureInfo with openlayers. >>> >>> // support GetFeatureInfo >>> >>> map.events.register('click', map, function (e) { >>> >>> document.getElementById('nodelist').innerHTML = >>> "Loading... please wait..."; >>> >>> var url = map.layers[0].getFullRequestString( >>> >>> { >>> >>> 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[0].params.LAYERS, >>> >>> FEATURE_COUNT: 50, >>> >>> WIDTH: map.size.w, >>> >>> HEIGHT: map.size.h >>> >>> }, >>> >>> "http://localhost:8888/geoserver/wms"; >>> >>> ); >>> >>> OpenLayers.loadURL(url, '', this, setHTML, setHTML); >>> >>> OpenLayers.Event.stop(e); >>> >>> }); >>> >>> } >>> >>> >>> >>> Please, give me a piece of information. >>> >>> >>> Best regards, >>> >>> Myeonghun Jeong. >>> >>> >>> >>> >> >> >
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