[OpenLayers-Users] Re: Problems getting WFS layer

Thu Jun 9 10:18:55 EDT 2011

Hi Casper,

that does not look like a valid BBOX to me in RD (EPSG:28992). Such no data is coming back.

displayProjection is used by e.g. the MousePosition control, it will display the X and Y in a different projection than the map is in.

What you want is to set projection to EPSG:28992.

If you can't figure out the correct map settings for RD, have a look at some existing application in RD such as:

http://www.rijkswaterstaat.nl/apps/geoservices/mapviewer2i/

or:

https://www.kademo.nl/

Hope this helps.

Best regards,
Bart

-- 
Looking for flexible support on OpenLayers or GeoExt? Please check out http://www.osgis.nl/support.html

Bart van den Eijnden
OSGIS
bartvde at osgis.nl

On Jun 9, 2011, at 4:12 PM, Casper Span wrote:

> Hi Bart, Mark,
> 
> There is nothing related to WFS on the console, nor on NET's XHR subtab. Even when everything is checked. It's like it crashes before it gets there... (with no error, ofcourse...) I've also tried your suggestion, Mark. Still the same.
> 
> The DescribeFeatureType:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml" xmlns:gs="http://casp-geoserver/" elementFormDefault="qualified" targetNamespace="http://casp-geoserver/">
>   <xsd:import namespace="http://www.opengis.net/gml" schemaLocation="http://localhost:80/geoserver/schemas/gml/3.1.1/base/gml.xsd"/>
>   <xsd:complexType name="locatiedossiersType">
>     <xsd:complexContent>
>       <xsd:extension base="gml:AbstractFeatureType">
>         <xsd:sequence>
>           <xsd:element maxOccurs="1" minOccurs="0" name="ID" nillable="true" type="xsd:decimal"/>
>           <xsd:element maxOccurs="1" minOccurs="0" name="GEOMETRY" nillable="true" type="gml:GeometryPropertyType"/>
>         </xsd:sequence>
>       </xsd:extension>
>     </xsd:complexContent>
>   </xsd:complexType>
>   <xsd:element name="locatiedossiers" substitutionGroup="gml:_Feature" type="gs:locatiedossiersType"/>
> </xsd:schema>
> 
> 
> Hmm... I just tried another request from a different pc... now I suddenly DID get some xhhtp on the NET panel:
> 
> REQUEST:
> <wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd http://casp-geoserver/ http://casp-geoserver/geoserver/wfs/DescribeFeatureType?version=1.1.0&typename=gs:locatiedossiers" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
> <wfs:Query typeName="feature:locatiedossiers" srsName="EPSG:28992" xmlns:feature="http://casp-geoserver/">
> <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
> <ogc:BBOX>
> <ogc:PropertyName>GEOMETRY</ogc:PropertyName>
> <gml:Envelope xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:28992">
> <gml:lowerCorner>562664.54279097 6811227.9320805</gml:lowerCorner>
> <gml:upperCorner>574130.09703169 6820515.0310153</gml:upperCorner>
> </gml:Envelope>
> </ogc:BBOX>
> </ogc:Filter>
> </wfs:Query>
> </wfs:GetFeature>
> 
> RESPONSE:
> <wfs:FeatureCollection numberOfFeatures="0" timeStamp="2011-06-09T16:09:36.265+02:00" xsi:schemaLocation="http://casp-geoserver/ http://casp-geoserver:80/geoserver/wfs?service=WFS&version=1.1.0&request=DescribeFeatureType&typeName=gs%3Alocatiedossiers http://www.opengis.net/wfs http://casp-geoserver:80/geoserver/schemas/wfs/1.1.0/wfs.xsd" xmlns:gs="http://casp-geoserver/" xmlns:ogc="http://www.opengis.net/ogc" xmlns:gml="http://www.opengis.net/gml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ows="http://www.opengis.net/ows" xmlns:wfs="http://www.opengis.net/wfs">
> <gml:featureMembers></gml:featureMembers>
> </wfs:FeatureCollection>
> 
> 
> So basically, it can't find anything... Maybe this is a projection related issue then... The data is EPSG:28992, 
> 
> My Map options hash have:
> projection: new OpenLayers.Projection("EPSG:4326"),
> displayProjection: new OpenLayers.Projection("EPSG:28992"),     
> 
> Could there be a mixup there? I still find the projection/displayProjection really confusing... what's the real difference between the two?
> 
> regards,
> Casper
> 
> On Thu, Jun 9, 2011 at 2:33 PM, Mª®k <mc.prins at gmail.com> wrote:
> 2011/6/9 Bart van den Eijnden <bartvde at osgis.nl>:
> > Hi Casper,
> > AJAX requests normally show up in the Console tab of Firebug, make you sure
> > you have activated the option to show AJAX requests.
> > Without a request XML and response XML it's really difficult to help you.
> > Otherwise, send us the output of your DescribeFeatureType request, a common
> > mistake is that the featureNS does not exactly match the namespace
> > advertized on the WFS.
> 
> my most common mistake here is a trailing slash on the namespace,
> always gets me...
> You might also want to try adding the featurePrefix : 'gs'  to the
> options hash (I see you're using that in the schema url).
> 
> Mark
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