UNCLASSIFIED
Hi,
Can someone tell me if it's possible to do a WFS DWithin distance filter
in meters on a feature type who's native units are degrees?
As an example, I tried to run the following query on the sample
tiger:poi layer in GeoServer 2.2. Instead of using the native SRS
(EPSG:4326), I used a projected SRS, hoping that the distance
calculation would occur in meters, but unfortunately it still used
degrees. What I want to achieve is to find all features within a
specific distance (in meters) using 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="tiger:poi" srsName="EPSG:900913">
<Filter
xmlns="http://www.opengis.net/ogc";>
<ogc:DWithin>
<ogc:PropertyName>the_geom</ogc:PropertyName>
<gml:Point
srsName="EPSG:900913"><gml:coordinates>-8238806.842956507,4969306.111096
254</gml:coordinates></gml:Point>
<Distance>1</Distance>
</ogc:DWithin>
</Filter>
</wfs:Query>
</wfs:GetFeature>
Thanks
Andrew
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