48e8a981d1
git-svn-id: http://svn.openlayers.org/trunk/openlayers@7655 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
104 lines
3.9 KiB
HTML
104 lines
3.9 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>OpenLayers Styles Unique Value Styles Example</title>
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<link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
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<link rel="stylesheet" href="style.css" type="text/css" />
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<script src="../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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var map, layer;
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function init(){
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map = new OpenLayers.Map('map', {maxResolution:'auto'});
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var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS",
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"http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
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map.addLayer(wms);
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map.setCenter(new OpenLayers.LonLat(0, 0), 0);
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// create 20 random features with a random type attribute. The
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// type attribute is a value between 0 and 2.
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var features = new Array(20);
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for (var i=0; i<20; i++) {
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features[i] = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.Point(Math.random()*360-180, Math.random()*180-90),
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{type: parseInt(Math.random()*3)}
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);
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}
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// create a styleMap with a custom default symbolizer
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var styleMap = new OpenLayers.StyleMap({
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fillOpacity: 1,
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pointRadius: 10
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});
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// create a lookup table with different symbolizers for 0, 1 and 2
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var lookup = {
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0: {externalGraphic: "../img/marker-blue.png"},
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1: {externalGraphic: "../img/marker-green.png"},
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2: {externalGraphic: "../img/marker-gold.png"}
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}
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// add rules from the above lookup table, with the keyes mapped to
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// the "type" property of the features, for the "default" intent
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styleMap.addUniqueValueRules("default", "type", lookup);
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layer = new OpenLayers.Layer.Vector('Points', {
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styleMap: styleMap
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});
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layer.addFeatures(features);
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map.addLayer(layer);
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// create 20 random features with a random state property.
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var features = new Array(20);
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var states = [
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OpenLayers.State.UNKNOWN,
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OpenLayers.State.UPDATE,
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OpenLayers.State.DELETE,
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OpenLayers.State.INSERT
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];
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for (var i=0; i<20; i++) {
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features[i] = new OpenLayers.Feature.Vector(
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new OpenLayers.Geometry.Point(Math.random()*360-180, Math.random()*180-90)
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);
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features[i].state = states[parseInt(Math.random()*4)];
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}
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var context = function(feature) {
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return feature;
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}
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var styleMap = new OpenLayers.StyleMap();
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// create a lookup table with different symbolizers for the different
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// state values
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var lookup = {};
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lookup[OpenLayers.State.UNKNOWN] = {fillColor: "green"};
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lookup[OpenLayers.State.UPDATE] = {fillColor: "green"};
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lookup[OpenLayers.State.DELETE] = {fillColor: "red"};
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lookup[OpenLayers.State.INSERT] = {fillColor: "orange"};
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styleMap.addUniqueValueRules("default", "state", lookup, context);
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layer = new OpenLayers.Layer.Vector('Points', {
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styleMap: styleMap
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});
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layer.addFeatures(features);
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map.addLayer(layer);
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}
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</script>
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</head>
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<body onload="init()">
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<h1 id="title">Unique Value Styles Example</h1>
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<div id="tags"></div>
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<p id="shortdesc">
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Shows how to create a style based on unique feature attribute values (markers)
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and feature state values (circles).
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</p>
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<div id="map" class="smallmap"></div>
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<div id="docs"></div>
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</body>
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</html>
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