Hopefully the following will help you:
var myStyleMap = new OpenLayers.StyleMap({
'default': new OpenLayers.Style({
backgroundGraphic: "../images/myhadow.png",
backgroundWidth: 29,
backgroundHeight: 19,
backgroundGraphicZIndex: 10,
backgroundXOffset: -10,
backgroundYOffset: -10,
externalGraphic: "${getExternalGraphic}",
graphicWidth: "${getGraphicWidth}",
graphicHeight: "${getGraphicHeight}",
graphicZIndex: 11,
cursor: 'default',
label: "${getLabel}",
labelAlign: "lt",
labelXOffset: "-10",
labelYOffset: "-14",
fontColor: "black",
fontSize: "${getFontSize}",
fontFamily: "'Arial'",
fontWeight: "bold",
labelOutlineColor: "#FFFFC0",
labelOutlineWidth: 4
},{
context: {
getExternalGraphic: function(feature) {
if (feature.cluster) {
return "../images/mycluster.png";
} else {
return "../images/my.png";
}
},
getGraphicWidth: function(feature) {
if (feature.cluster) {
return 32;
} else {
return 19;
}
},
getGraphicHeight: function(feature) {
if (feature.cluster) {
return 31;
} else {
return 19;
}
},
getLabel: function(feature) {
if(document.getElementById('OLBtnWaterInfo').className=='OverlayButtonOn') {
if (feature.cluster) {
var label = "";
for (i=0;i <=
feature.cluster.length - 1; i++) {
label = label +
feature.cluster[i].attributes["MyData1"] + "\n";
}
return label;
} else {
return
feature.attributes["ConnectedPipeDiameter"];
}
} else {
return '';
}
},
getFontSize: function(feature) {
if
(document.getElementById('OLBtnMagnify').className=='OverlayButtonOn') {
return "30px";
} else {
return "16px";
}
}
}
})});
//====== my Cluster Strategy ======
var myCluster = new OpenLayers.Strategy.Cluster({
distance: 50,
threshold: 2,
clusteringActivated: false,
deactivate: function() {
if (this.clusteringActivated) {
this.clusteringActivated = false;
var deactivated =
OpenLayers.Strategy.prototype.deactivate.call(this);
if(deactivated) {
var features = [];
var clusters = this.layer.features;
for (var i=0; i < clusters.length;
i++) {
var cluster = clusters[i];
if (cluster.cluster) {
for (var j=0; j <
cluster.cluster.length; j++) {
features.push(cluster.cluster[j]);
}
} else {
features.push(cluster);
}
}
this.layer.removeAllFeatures();
this.layer.events.un({
"beforefeaturesadded":
this.cacheFeatures,
"moveend": this.cluster,
scope: this
});
this.layer.addFeatures(features);
this.clearCache();
}
return deactivated;
}
},
activate: function() {
if (!this.clusteringActivated) {
this.clusteringActivated = true;
var activated =
OpenLayers.Strategy.prototype.activate.call(this);
if(activated) {
var features = [];
var clusters = this.layer.features;
for (var i=0; i < clusters.length;
i++) {
var cluster = clusters[i];
if (cluster.cluster) {
for (var j=0; j <
cluster.cluster.length; j++) {
features.push(cluster.cluster[j]);
}
} else {
features.push(cluster);
}
}
this.layer.removeAllFeatures();
this.layer.events.on({
"beforefeaturesadded":
this.cacheFeatures,
"moveend": this.cluster,
scope: this
});
this.layer.addFeatures(features);
this.clearCache();
}
return activated;
}
}
});
//====== my WFS ======
my = new OpenLayers.Layer.Vector('my',{
strategies: [new OpenLayers.Strategy.BBOX(), myCluster],
styleMap: myStyleMap,
visibility: false,
minScale: maxShowOverlayScale,
protocol: new OpenLayers.Protocol.WFS({
url: WFS_Host,
featureType: 'my',
featureNS: 'http://mapserver.gis.umn.edu/mapserver',
featurePrefix: 'ms',
geometryName: 'msGeometry',
srsName: 'EPSG:27700',
version: '1.1.0'
})
});
MapOS.addLayer(my);
Regards,
Donald
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of robertico
Sent: 26 January 2013 12:37
To: [email protected]
Subject: Re: [OpenLayers-Users] Cluster strategy (using different icon)
There seem to be more questions than answers here
--
View this message in context:
http://osgeo-org.1560.n6.nabble.com/Cluster-strategy-using-different-icon-tp
5028447p5030035.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.
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