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We have a specific point and would like to count all features in a circular area with center at that specific point.

The data is:
- Stored in a shapefile layer created in QGIS
- Served by geoserver
- Browsed by a web browser using openlayers

Thank you in advance for your advice.

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do you have a spatial database (like postgres/postgis)? –  Mapperz Feb 7 '13 at 21:18
Yes, but I think it's not what I need in this case, as the features are all in shapefiles. –  Martin0x777 Feb 22 '13 at 19:07
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1 Answer

up vote 2 down vote accepted

Issue a WFS-hits request with a specific ECQL filter (maybe DWITHIN)

Example request
http://<server>/wfs/?&version=1.1.0&request=GetFeature&typeName=ns:layer&resultType=hits&CQL_FILTER=<ECQL FILTER>

The response is something like

<wfs:FeatureCollection numberOfFeatures="324" timeStamp="2013-02-08T18:18:28.649Z" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"/>
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