[OpenLayers-Users] expand on georss layer

[Don Martin]

we abandoned georss and created a straight gml layer which solved the issues
listed.



Don Martin wrote:
> 
> We've got a georss example working on our site - truck tracking records
> from a sql query rendered as georss.
> We need a couple of other things from this layer if possible -
> 	1. color coded markers/icons indicating when the vehicle is next
> scheduled to be available - so different markers for a particular record
> determined by a field in our query (then to xml?).
> 	2. clicking on a marker needs to pass an id (that we can tie back to the
> sql table/query) to a textbox on the page but off the map to support
> further processing.
> 
> Included below is the working geoss layer call and an uninformed attempt
> at a GML/georss layer (obviously not really getting it).
> 
> Would someone kindly direct me to a sample (GML or vector presumably) that
> would support our needs?
> 
> working georss layer:
> 
>         function loadvehicleLayers() {
>             carrier_id = document.getElementById('DDvcarrier').value;
>             vehicle_ref = document.getElementById('DDvvehicle').value;
>             datepass = document.getElementById('selvdateTextBox').value; 
> 
>             listname = "vehicletrack";
>             filecall =
> "../component/mapxml.aspx?actv="+listname+"&carv="+carrier_id+"&vehv="+vehicle_ref+"&datev="+datepass
>             icon = new OpenLayers.Icon("../images/map/Pushpin.png", new
> OpenLayers.Size(18,18));
>             vehiclelay = new OpenLayers.Layer.GeoRSS( 'vehicle', filecall,
> {'icon':icon, 'useFeedTitle':false });
>             vehiclelay.events.register("loadend", window, vehicletrac);
> 
>         function vehicletrac() {
>             vehiclelineLayer = new
> OpenLayers.Layer.PointTrack(vehiclelay.name + " track",
>                     {dataFrom:
> OpenLayers.Layer.PointTrack.dataFrom.SOURCE_NODE});
>             vehiclelineLayer.addNodes(vehiclelay.features);
>             map.addLayer(vehiclelineLayer);
>             vehiclelay.setName(vehiclelay.name + " node");
>             var feature, marker;
>             for (var i = vehiclelay.features.length-1; i>0; i--) {
>                 if (vehiclelay.features[i].data.popupContentHTML.indexOf(
>                         "Untitled") != -1) {
>                     vehiclelay.removeMarker(vehiclelay.markers[i]);
>                 }
>             }
>             map.raiseLayer(vehiclelay, 4);
>             map.addLayer(vehiclelay);
>         }
> 
> georss xml created from sql query:
> 
> <?xml version="1.0" encoding="utf-8" ?> 
> - <rss version="2.0" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"> 
> - <channel> 
> - <item> 
> <pubDate>6/4/2008 8:00:48 AM</pubDate> 
> <geo:lat>61.221620000</geo:lat> 
> <geo:long>-149.850155000</geo:long> 
> <title>begin point: 08:00:48</title> 
> <description>Location: UNITED FRT and TRANS</description> 
> </item> 
> - <item> 
> <pubDate>6/4/2008 8:36:20 AM</pubDate> 
> <geo:lat>61.164890000</geo:lat> 
> <geo:long>-149.861286000</geo:long> 
> <title>BobTail - 08:36:20</title> 
> <description>Location: SMURFIT - ANCH RECYCL - vehicle: 86 - driver: Tim
> February</description> 
> </item>
> < ... >
> 
> 
> non-working GML/georss layer attempt:
> 
>         function loadvehicleLayers() {
> 
>             carrier_id = document.getElementById('DDvcarrier').value;
>             vehicle_ref = document.getElementById('DDvvehicle').value;
>             datepass = document.getElementById('selvdateTextBox').value; 
>             listname = "vehicletrack";
>             filecall =
> "../component/mapgeorss.aspx?actv="+listname+"&carv="+carrier_id+"&vehv="+vehicle_ref+"&datev="+datepass
> 
>             var in_options = { 
>                      //'internalProjection': new
> OpenLayers.Projection("EPSG:900913"), 
>                      //'externalProjection': new
> OpenLayers.Projection("EPSG:4326"), 
>                      'type':'eventType alertLevel' 
>                 }; 
>             
>             var styleMap = new OpenLayers.StyleMap({ 
>                     fillOpacity: 1, 
>                     pointRadius: 10 
>                 }); 
> 
>             var lookup = { 
>                 dflt: {externalGraphic: "../images/map/vertex[1].png"}, 
>                 test1: {externalGraphic: "../images/map/vertex[1].png"}, 
>                 test2: {externalGraphic: "../images/map/vertex[1].png"}
>             } 
> 
>             styleMap.addUniqueValueRules("default", "type", lookup); 
>             var georssformat = new OpenLayers.Format.GeoRSS(in_options); 
>             //OpenLayers.Format.GeoRSS.prototype.xy = true;
>             vehiclelay = new OpenLayers.Layer.GML("vehicle node",
> filecall, 
>             {format: georssformat, styleMap: styleMap}); 
> 
>             map.raiseLayer(vehiclelay, 4);
>             map.addLayer(vehiclelay);
>         }
> 
> georss (for GML) xml created from sql query:
> 
> <?xml version="1.0" encoding="utf-8" ?> 
> - <rss version="2.0" xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"> 
> - <channel> 
> - <item> 
> <pubDate>6/4/2008 8:00:48 AM</pubDate> 
> <geo:point>61.221620000 -149.850155000</geo:point> 
> <title>begin point: 08:00:48</title> 
> <description>Location: UNITED FRT and TRANS <br> new rec - 
> ../default.aspx new manefest record </description> 
> <type>dflt</type> 
> </item> 
> - <item> 
> <pubDate>6/4/2008 8:36:20 AM</pubDate> 
> <geo:point>61.164890000 -149.861286000</geo:point> 
> <title>BobTail - 08:36:20</title> 
> <description>Location: SMURFIT - ANCH RECYCL - vehicle: 86 - driver: Tim
> February <br> new rec -  ../default.aspx new manefest record
> </description> 
> <type>dflt</type> 
> </item> 
> - <item>
> < ... >
> 
> would appreciate any suggestions.
> Don
> 
> 

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