[GIS] Cluster features – get value properties of feature – on style function

clusteringopenlayers

I struggle with not very complicated issue, I need get average values on my cluster features. Without cluster it's OK, I get the value but how to get value in cluster set?

with cluster value: feature.get('tzewn')[i] – is undefined

without cluster value: feature.get('tzewn') – is ok.

My style function:

var s_t_zew = function(feature, resolution) {
    var fGet; 
    var size = feature.get('features').length;

    for(var i=0; i<size; i++){
        //function isCluster(feature) { if (!feature || !feature.get('features')) { return false;  }

          fGet += **feature.get('tzewn')[i]**; <--- it's undefined
          console.log('i: '+i+',  '+size+' '+ ',  'fGet);
//}
}
..
fGet = fGet/size;
...
text: fGet.toString(),
...
}

My GeoJSON:

parseResponse({"type":"FeatureCollection","totalFeatures":1314,"features":[{"type":"Feature","id":"v_wezel_tzewn.fid--7639626f_157c2088d0c_7c7e","geometry":{"type":"Point","coordinates":[2572380.517,7010401.8134]},"geometry_name":"geom","properties":{"gis_id":13176,"tzewn":3.5,"bbox":[2572380.517,7010401.8134,2572380.517,7010401.8134]}},
... }

How to get value on cluster features?

feature.get('tzewn')[i] doesn't work – Cannot read property '0' of undefined,

parseFloat(feature.valueOf('tzewn')[i]) doesn't work – get NaN

In OpenLayers 2 this works well:

sumValue += parseFloat(feature.cluster[i].attributes.tzewn)

Best Answer

Use feature.get('features')[i].get('tzewn')

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