1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>OpenLayers: Point Track Markers</title> <link rel="stylesheet" href="../theme/default/style.css" type="text/css" /> <link rel="stylesheet" href="style.css" type="text/css" /> <script src="../lib/OpenLayers.js"></script> <script type="text/javascript"> var map, layer, rss, lineFeatures, popup; OpenLayers.ProxyHost = "proxy.cgi?url="; function init(){ map = new OpenLayers.Map('map', {maxResolution:'auto'}); layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} ); map.addLayer(layer); map.setCenter(new OpenLayers.LonLat(20.22, 22.05), 9); map.addControl(new OpenLayers.Control.LayerSwitcher()); } function addUrl() { var urlObj = OpenLayers.Util.getElement('url'); var value = urlObj.value; var parts = value.split("/"); rss = new OpenLayers.Layer.GeoRSS(parts[parts.length-1], value); rss.events.register("loadend", window, populateMap); map.addLayer(rss); } function populateMap() { // create the point track layer var lineLayer = new OpenLayers.Layer.PointTrack(rss.name + " Track", {dataFrom: OpenLayers.Layer.PointTrack.dataFrom.SOURCE_NODE}); // add the features from the rss layer to the track layer. This // also works with OpenLayers.Feature.Vector features. lineLayer.addNodes(rss.features); map.addLayer(lineLayer); rss.setName(rss.name + " Comments"); var feature, marker; // only show markers for features that are not "Untitled" for (var i = rss.features.length-1; i>0; i--) { if (rss.features[i].data.popupContentHTML.indexOf( "Untitled") != -1) { rss.removeMarker(rss.markers[i]); } } // keep markers on top of tracks map.raiseLayer(rss, 1); } </script> </head> <body onload="init()"> <h1 id="title">GeoRSS PointTrack in OpenLayers</h1> <p style="font-size:.9em;">This demo uses OpenLayers.Layer.GeoRSS and OpenLayers.Layer.PointTrack. The track is created by connecting the points of the GeoRSS feed.</a></p> <form onsubmit="return false;"> GeoRSS URL: <input type="text" id="url" size="50" /><input type="submit" onclick="addUrl(); return false;" value="Load Feed" onsubmit="addUrl(); return false;" /> </form> <p>The above input box allows the input of a URL to a GeoRSS feed. This feed can be local to the HTML page -- for example, entering 'xml/track1.xml' will work by default.</p> <p>The example shows a track, displayed as a line connecting the points of the feed. It also shows markers at positions that have a title tag in the rss item. If clicked, a popup will show title and description.</p> <div id="map" class="smallmap"></div> </body> </html> |