[OpenLayers-Users] Visualizing WFS in Open Layers

[Kai Behncke]

Dear Till and Arnd,

thank you for your hints.

>Just add the 900913 def to your local epsg file and add the epsg code 900913
>to your mapfiles header should do the job...


I tried that but so far with no success, and I wonder if it should work also with 4326, because I reprojected the whole Map to 4326??

var options = {
    maxExtent: new OpenLayers.Bounds(7.9189,52.2102,8.1716,52.3467),
    units: 'dd',
    projection: "EPSG:4326"
};


...and the WMS I have is also in 4326 and seems to lay correctly above the google-data.



To come to the target step-by-step without eventually projection-mismatch I try the data from WFS-Example now:


  function init(){
            OpenLayers.ProxyHost="/cgi-bin/proxy.cgi?url=";
            map = new OpenLayers.Map('map');
            layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
            map.addLayer(layer);

            layer = new OpenLayers.Layer.WFS( "Owl Survey",
                "http://www.bsc-eoc.org/cgi-bin/bsc_ows.asp?",
                {typename: "OWLS"},
                { featureClass: OpenLayers.Feature.WFS});
            map.addLayer(layer);
            map.addControl(new OpenLayers.Control.LayerSwitcher());
            map.setCenter(new OpenLayers.LonLat(-100, 60), 3);
        }


...but also there on my development server the wfs is not visualized???

I set the proxy.cgi to the servers cgi-bin but without success (the proxy-cgi is executable and readable by the apache-group).

Definetely cgi-scripts are parsed (I tested it with a little "Hello-World"-Python-Cgi.

Bugtracker gives me after loading wfs.html in "red" a

http://www.gastronomap.de/cgi-bin/proxy.cgi?url=http%3A%2F%2Fwww.bsc-eoc.org%2Fcgi-bin%2Fbsc_ows.asp%
3Ftypename%3DOWLS%26SERVICE%3DWFS%26VERSION%3D1.0.0%26REQUEST%3DGetFeature%26SRS%3DEPSG%253A4326%26BBOX%
3D-205.46875%2C-45.46875%2C5.46875%2C165.46875

....if I open that in a browser nothing at all occurs, puh....


I wonder what else might create that error,hmmmmm, well maybe tomorrow I will find a solution.

Best regards, Kai
-------- Original-Nachricht --------
> Datum: Tue, 3 Feb 2009 19:14:37 +0100
> Von: Till Adams <adams at terrestris.de>
> An: Kai Behncke <Kai-Behncke at gmx.de>, users at openlayers.org
> Betreff: Re: [OpenLayers-Users] Visualizing WFS in Open Layers

> Kai,
> 
> looksl ike you trapped into the problem of the google projection, because
> google's data aren't in 4326,
> they have their own projection and u have to reproject your stuff to the
> googles stuff
> (google at epsg code 900913 - oir there is a new one I do not know yet...)
> 
> Just add the 900913 def to your local epsg file and add the epsg code
> 900913
> to your mapfiles header should do the job...
> 
> Regards, Till
> 
> 
> 
> 
> "Kai Behncke" <Kai-Behncke at gmx.de> schrieb:
> > Dear Users,
> > 
> > In the OpenLayers Tutorium I read that it`s possible to include and
> visualize a
> > WFS, but somehow it doesn`t work with mine.
> > 
> > The WFS (via UMN MapServer) seems to be correct:
> > 
> > 
> >
> http://85.214.90.79/cgi-bin/mapserv_ol.sh?SERVICE=WFS&VERSION=1.0.0&Request=GetFeature&Typename=gastronomie_wfs
> > 
> > But if I try to include it on top of a google layer it doesn`t appear
> (It
> > shouldn`t be because of the projection, because a 
> > WMS with the specific parameters appears properly).
> > 
> > I include it via:
> > 
> > 
> > --------------
> > 
> > function init() {
> > var options = {
> >     maxExtent: new OpenLayers.Bounds(7.9189,52.2102,8.1716,52.3467),
> >     units: 'dd',
> >     projection: "EPSG:4326"
> > };
> >   map = new OpenLayers.Map('map',options);
> > 
> > 
> > var gphy = new OpenLayers.Layer.Google(
> > "Google Physical",{type: G_PHYSICAL_MAP});
> > 
> > var gastronomap_wfs= new OpenLayers.Layer.WFS( "small_wfs",
> > "http://85.214.90.79/cgi-bin/mapserv_ol.sh?",
> > {Typename: 'gastronomie_wfs'});            
> > 
> > 
> > map.addLayers([gastronomap_wfs,gphy]);
> > map.addControl(new OpenLayers.Control.LayerSwitcher());
> > map.zoomToMaxExtent();}
> > 
> > ---------------
> > 
> > Can anybody help?
> > Thank you very much in advance, Kai
> > -- 
> > Jetzt 1 Monat kostenlos! GMX FreeDSL - Telefonanschluss + DSL 
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> > 
> 

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