geoextgeoserveropenlayers-2wfswms
GeoExt has Legend capability but is is quite basic which shows only feature types like in example http://api.geoext.org/1.0/examples/legendpanel.html. How could it be modified display legend with count(no of values)?
I am using geoserver to serve map and using geoext.
The solution I am looking for is to add this feature into legend panel (may be through modification of javascript source) and not make my own solution. Any path, direction code for this would be appreciated.
This might help you
//create a TreeNode
var treeNode = new Ext.tree.TreeNode({
text: "Treenode",
expanded:true,
bodyStyle: 'background-color:#A4A4A4;'
});
//Append grouped overlays in the TreeNode
treeNode.appendChild(new GeoExt.tree.OverlayLayerContainer({
text: "Overlay",
map: map,
expanded:true,
loader: {
filter: function(record) {
return record.get("layer").name.indexOf("area")!== -1;
}
}
}));
if there are two area layers with name : Market area & Ag. area. The area layers should be appear inside the "Overlay" tree.
On
<input class="x-tree-node-cb" type="checkbox" checked="">
Off
<input class="x-tree-node-cb" type="checkbox">
Recommend you use Firefox and Firebug to view the source live when and can interactively select objects and change their state and see the source code change.
Best Answer
To get the number of features from a layer in the server you need to use the WFS (Web Feature Service) request. You will need to call GetFeature and set the parameter resultType to hits (resultType=hits). This will just give you an integer count of the number of features you've requested (as opposed to returning all the features, as a GetFeature request using resultType=results would).