It looks like you are talking to GeoServer which doesn't use the distance units in the query, so you are asking for all points within 2000 degrees of the center. I have an open ticket (http://jira.codehaus.org/browse/GEOS-937) if you want to contribute (code or cash) to a fix.
However I suspect that what you are trying won't speed things up anyway. Consider filtering by importance or other attribute and possibly using a WMS. Ian On 5 December 2011 08:11, Shadin <[email protected]> wrote: > *hi list > > I'm using a WFS protocol on Vector layer and I wanna filter some features > using a spatial filter. My filter is of type: DWITHIN > i need to reduce amount of data retrieved so that they could appear fast > here is a peace of y code:* > > var point = new OpenLayers.Geometry.Point(45,25) > point.transform(new OpenLayers.Projection("EPSG:4326"), new > OpenLayers.Projection("EPSG:3857")); > > > var vessels = new OpenLayers.Layer.Vector("WFS", { > styleMap: styles, > strategies: > [new OpenLayers.Strategy.Fixed(), new OpenLayers.Strategy.BBOX()], > protocol: new OpenLayers.Protocol.WFS({ > url: "http://IP/geoserver/wfs";, > featureType: "Initial", > featureNS: "http://mapmap.org";, > srsName: "EPSG:3857", > version: "1.1.0", > extractAttributes: true, > isBaseLayer: false, > visibility: true > }) > filters: [ > new OpenLayers.Filter.Spatial({ > type: OpenLayers.Filter.Spatial.DWITHIN, > property: "the_geom", > value: point, > distance : 2000, > distanceUnits: 'mi' > > }) > ] > }); > > *this is my point (45,25) and my distance 2000 m > but i haven't noticed any improvement in the displaying speed * > > > -- > View this message in context: > http://osgeo-org.1803224.n2.nabble.com/DWITHIN-Spatial-Filter-tp7062101p7062101.html > Sent from the OpenLayers Users mailing list archive at Nabble.com. > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users -- Ian Turton _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
