On 04.10.2010 16:13, Marc Jansen wrote:
// cluster only features that are nearby and have the same "klasse"
        new OpenLayers.Layer.Vector('Vektorlayer 2', {
strategies: [new OpenLayers.Strategy.Fixed(), new OpenLayers.Strategy.AttributeCluster({
                rule: new OpenLayers.Rule({
                    attribute: 'klasse'
                })
            })],
            protocol: new OpenLayers.Protocol.HTTP({
                url: "../data/data_002.json",
                format: new OpenLayers.Format.GeoJSON()
            })
});

Sorry, correction. That should read:

    new OpenLayers.Layer.Vector('Vektorlayer 2', {
strategies: [new OpenLayers.Strategy.Fixed(), new OpenLayers.Strategy.AttributeCluster({
            attribute: 'klasse'
        })],
        protocol: new OpenLayers.Protocol.HTTP({
            url: "../data/data_002.json",
            format: new OpenLayers.Format.GeoJSON()
        })
    })

Regards,
Marc and Thorsten
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