Hi,
The correct way to do it is to give distance with units.
<Distance units="your unit goes here">5</Distance>
However, it does not work with Geoserver
http://jira.codehaus.org/browse/GEOS-937
I do not know if it is good to use in a filter
<gml:Point
srsName="EPSG:900913"><gml:coordinates>-8238806.842956507,4969306.111096254</gml:coordinates></gml:Point>
WFS 1.1.0 is using GML3 by default and using gml:pos it preferred instead of
gml:coordinates. However, coordinates are not strictly forbidden so I suppose
your filter is valid. However, mixing GML2 and GML3 may lead to odd behaviour
at least when the coordinate system is one of those northing-easting or
latitude-longitude systems.
-Jukka Rahkonen-
Dwyer, Andrew wrote:
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>-8238806.842956507,4969306.111096254</gml:coordinates></gml:Point>
<Distance>1</Distance>
</ogc:DWithin>
</Filter>
</wfs:Query>
</wfs:GetFeature>
Thanks
Andrew
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