Search code examples
openlayersgeoservercql

OpenLayers: filter radius

I am trying to filter a points layer to only show points within a given radius. I have determined the best method to do this is a CQL_FILTER using DWITHIN. When I set this param and then load the map, I get broken tiles. Here is the snippet of my code in question:

var elecs = new OpenLayers.Layer.WMS(
"Elec",
"http://localhost:8080/geoserver/wms",
    {
    layers: "UVC:Elec_3790",
    transparent: "true",
    styles:"Elecs",
    format: "image/png",
    cql_filter: "DWITHIN(the_geom, Point(-79, 39), 50, kilometers)"
 },
    {isBaseLayer: false, visibility: true}
);

Removing the cql_filter line loads the map normally again but without a radius filter.

Solution

  • Not sure about the broken tiles, but GeoServer only supports unit of measure based searches if the data backend is Oracle at the moment (as of version 2.2-RC1)