Where you do:
var pid = feature.pid
You want to do:
var pid = feature.attributes.pid
Puneet Kishor wrote:
>
> Ok, I actually was able to figure out how to use a vector layer to
> create markers (points). It was a lot easier that what I was making it
> out to be, once I figured out what to do. My problem now lies with
> passing a value to the popup creator so I can display point-specific
> info. My code looks like so (cribbed from the vector layer examples web
> page) --
>
> var vectorLayer = new OpenLayers.Layer.Vector("Vector Layer",
> {"style": layer_style});
>
> selectControl = new OpenLayers.Control.SelectFeature(
> vectorLayer,
> {"onSelect": onFeatureSelect, "onUnselect": onFeatureUnselect}
> );
> map.addControl(selectControl);
> selectControl.activate();
>
> var features = [];
> for (var i = 0; i < points.length; i++) {
> var point = new OpenLayers.Geometry.Point(points[i].lo,
> points[i].la).transform(
> new OpenLayers.Projection("EPSG:4326"),
> map.getProjectionObject()
> );
> var pointFeature = new OpenLayers.Feature.Vector(point, {"pid":
> i}, style_blue);
> features.push(pointFeature);
> }
>
> vectorLayer.addFeatures(features);
> map.addLayer(vectorLayer);
> },
>
> "onPopupClose": function(evt) {
> selectControl.unselect(selectedFeature);
> },
>
> "onFeatureSelect": function(feature) {
> selectedFeature = feature;
>
> var pid = feature.pid; // this was set in the loop above
> var str = getInfoOnFeature(pid); // this is where I retrieve info
>
> var popup = new OpenLayers.Popup.FramedCloud(
> "chicken",
> feature.geometry.getBounds().getCenterLonLat(),
> null,
> "<div style='font-size:.8em'>" +
> "Point ID: " + feature.pid + "<br />" +
> "<br />Info: " + str +
> "</div>",
> null,
> true,
> onPopupClose
> );
>
> feature.popup = popup;
> map.addPopup(popup);
> }
>
> As shown above, when a feature is selected, I would like to be able to
> access its "pid" and use it to retrieve information about that feature
> that I can then display in the popup. The OpenLayers.Feature docs say
> that I can specify arbitrary, serializable attributes in the
> constructor. For now, I get "undefined" for feature.pid. What am I doing
> wrong, and how do I correct
> this?sts.osgeo.org/mailman/listinfo/openlayers-users
>
--
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