[OpenLayers-Users] Changing style based on feature attributes.

[kapuch]

Hi.

I was looking for answer on the mailing list but didn't find the answer.

I have clustered features and I want to use diffrent styles based on cluster
feature attribute count.

When the count attribute is more than 1 i would like to use this style:

var style = new OpenLayers.Style({
              pointRadius: "${radius}",
              fillColor: "#ffcc66",
              fillOpacity: 0.8,
              strokeColor: "#cc6633",
              cursor: 'pointer',
              strokeWidth: "${width}",
              strokeOpacity: 0.8,
            }, {
              context: {
                width: function(feature) {
                  return (feature.cluster) ? 2 : 1;
                },
                radius: function(feature) {
                  var pix = 2;
                  if(feature.cluster) {
                    pix = Math.min(feature.attributes.count, 7) + 2;
                  }
                  return pix;
                }
              }
            });

But when the count is 1 i would like to display externalImage with this
style:
var style = new OpenLayers.Style(
{externalGraphic: 'img/marker.png',
graphicHeight: 21,
graphicWidth: 16});

Now how can I switch between those two styles based on count attribute of
the feature.

Can anybody help?




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