e8960054a9
git-svn-id: http://svn.openlayers.org/trunk/openlayers@12082 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
126 lines
5.1 KiB
HTML
126 lines
5.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<title>Extended clustering 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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<style type="text/css">
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label {
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cursor: pointer
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}
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#wrap {
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width: 925px;
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margin: 10px;
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}
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#strategy-chooser, #generalinfo, #info {
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width: 400px;
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padding: 0;
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float: right;
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clear: right;
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margin-bottom: 4px;
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}
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#map {
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float: left;
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}
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</style>
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</head>
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<body>
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<h1 id="title">Extended clustering</h1>
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<div id="tags">
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cluster, advanced
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</div>
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<p id="shortdesc">
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Shows the usage of custom classes for a fine grained control about
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the clustering behaviour.
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</p>
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<div id="wrap">
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<div id="map" class="smallmap">
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</div>
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<div id="strategy-chooser">
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<p>
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Select the desired clustering strategy:
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</p>
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<label>
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<input type="radio" name="strategy" value="none" id="no-strategy" checked="checked">No strategy
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</label>
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<br>
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<label>
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<input type="radio" name="strategy" value="cluster" id="cluster-strategy">Simple cluster-strategy
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</label>
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<br>
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<label>
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<input type="radio" name="strategy" value="attribute-cluster" id="attributive-cluster-strategy">Attributive cluster-strategy
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</label>
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<br>
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<label>
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<input type="radio" name="strategy" value="rule-cluster" id="rulebased-cluster-strategy">Rulebased cluster-strategy
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</label>
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</div>
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<div id="generalinfo">
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</div>
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<div id="info">
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</div>
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</div>
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<div id="docs" style="clear: both; padding-top: 10px">
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<p>
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The vectorlayer in this example contains random data with an
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attribute "clazz" that can take the values 1, 2, 3 and 4. The
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features with clazz = 4 are considered more important than the
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others.
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</p>
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<p>
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The radiobuttons on the right of the map control the
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cluster strategy to be applied to the features.
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</p>
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<ul>
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<li>
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<strong>No strategy</strong>
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means that all features are
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rendered, no clustering shall be applied
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</li>
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<li>
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<strong>Simple cluster-strategy</strong>
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applies the cluster
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strategy with default options to the layer. You should notice
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that many of the important features with clazz = 4 are getting
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lost, since clustering happens regardless of feature attributes
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</li>
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<li>
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<strong>Attributive cluster-strategy</strong>
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uses a
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customized cluster strategy. This strategy is configured to
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cluster features of the same clazz only. You should be able to see all
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red points (clazz = 4) even though the data is clustered. A
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cluster now contains only features of the same clazz.
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</li>
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<li>
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<strong>Rulebased cluster-strategy</strong>
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uses another
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customized cluster strategy. This strategy is configured to
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cluster features that follow a certain rule only. In this case only
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features with a clazz different from 4 are considered as
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candidates for clustering. That means that usually you have fewer
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clusters on the map, yet all with clazz = 4 are easily
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distinguishable
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</li>
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</ul>
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<p>
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Hover over the features to get a short infomation about the
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feature or cluster of features.
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</p>
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</div>
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<p>
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View the <a href="strategy-cluster-extended.js" target="_blank">strategy-cluster-extended.js</a>
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source to see how this is done.
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</p>
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<script type="text/javascript" src="../lib/OpenLayers.js"></script>
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<script type="text/javascript" src="strategy-cluster-extended.js"></script>
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</body>
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</html>
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