Add KML earthquake example
This commit is contained in:
Tim Schaub
10758
examples/data/kml/2012_Earthquakes_Mag5.kml
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10758
examples/data/kml/2012_Earthquakes_Mag5.kml
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examples/kml-earthquakes.html
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examples/kml-earthquakes.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="chrome=1">
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<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
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<link rel="stylesheet" href="../css/ol.css" type="text/css">
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<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
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<link rel="stylesheet" href="../resources/layout.css" type="text/css">
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<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
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<title>Earthquakes in KML</title>
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<style>
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#map {
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position: relative;
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}
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#info {
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position: absolute;
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height: 1px;
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width: 1px;
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z-index: 100;
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}
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.tooltip.in {
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opacity: 1;
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filter: alpha(opacity=100);
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}
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.tooltip.top .tooltip-arrow {
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border-top-color: white;
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}
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.tooltip-inner {
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border: 2px solid white;
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}
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</style>
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</head>
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<body>
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<div class="navbar navbar-inverse navbar-fixed-top">
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<div class="navbar-inner">
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<div class="container">
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<a class="brand" href="./">OpenLayers 3 Examples</a>
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<ul class="nav pull-right">
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<li><iframe class="github-watch-button" src="http://ghbtns.com/github-btn.html?user=openlayers&repo=ol3&type=watch&count=true"
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allowtransparency="true" frameborder="0" scrolling="0" height="20" width="90"></iframe></li>
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<li><a href="https://twitter.com/share" class="twitter-share-button" data-count="none" data-hashtags="openlayers"> </a></li>
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<li><div class="g-plusone-wrapper"><div class="g-plusone" data-size="medium" data-annotation="none"></div></div></li>
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</ul>
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</div>
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</div>
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</div>
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<div class="container-fluid">
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<div class="row-fluid">
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<div class="span12">
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<div id="map" class="map"><div id="info"></div></div>
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</div>
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</div>
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<div class="row-fluid">
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<div class="span12">
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<h4 id="title">Earthquakes in KML</h4>
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<p id="shortdesc">Demonstrates the use of a Shape symbolizer to render earthquake locations.</p>
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<div id="docs">
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<p>
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This example parses a KML file and renders the features as a vector layer. The layer is given a <code>ol.style.Style</code> that renders earthquake locations with a size relative to their magnitude. The style uses a <code>ol.style.Shape</code> symbolizer where the <code>size</code> comes from the <code>magnitude</code> attribute on the features.
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</p>
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<p>See the <a href="kml-earthquakes.js" target="_blank">kml-earthquakes.js source</a> to see how this is done.</p>
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</div>
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<div id="tags">KML, vector, style</div>
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</div>
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</div>
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</div>
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<script src="jquery.min.js" type="text/javascript"></script>
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<script src="../resources/bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
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<script src="loader.js?id=kml-earthquakes" type="text/javascript"></script>
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<script src="../resources/social-links.js" type="text/javascript"></script>
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</body>
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</html>
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83
examples/kml-earthquakes.js
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examples/kml-earthquakes.js
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goog.require('ol.Map');
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goog.require('ol.RendererHint');
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goog.require('ol.View2D');
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goog.require('ol.expr');
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goog.require('ol.layer.TileLayer');
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goog.require('ol.layer.Vector');
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goog.require('ol.parser.KML');
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goog.require('ol.source.Stamen');
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goog.require('ol.source.Vector');
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goog.require('ol.style.Fill');
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goog.require('ol.style.Shape');
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goog.require('ol.style.Stroke');
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goog.require('ol.style.Style');
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var style = new ol.style.Style({
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symbolizers: [
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new ol.style.Shape({
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size: ol.expr.parse('5 + 20 * (magnitude - 5)'),
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fill: new ol.style.Fill({
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color: '#ff9900',
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opacity: 0.4
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}),
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stroke: new ol.style.Stroke({
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color: '#ffcc00',
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opacity: 0.2
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})
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})
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]
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});
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var vector = new ol.layer.Vector({
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source: new ol.source.Vector({
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parser: new ol.parser.KML({dimension: 2}),
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url: 'data/kml/2012_Earthquakes_Mag5.kml'
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}),
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style: style
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});
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var raster = new ol.layer.TileLayer({
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source: new ol.source.Stamen({
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layer: 'toner'
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})
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});
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var map = new ol.Map({
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layers: [raster, vector],
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renderer: ol.RendererHint.CANVAS,
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target: 'map',
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view: new ol.View2D({
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center: [0, 0],
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zoom: 2
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})
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});
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var info = $('#info');
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info.tooltip({
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animation: false,
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trigger: 'manual'
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});
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map.on(['click', 'mousemove'], function(evt) {
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var pixel = evt.getPixel();
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info.css({
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left: pixel[0] + 'px',
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top: (pixel[1] - 15) + 'px'
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});
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map.getFeatures({
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pixel: pixel,
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layers: [vector],
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success: function(layerFeatures) {
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var feature = layerFeatures[0][0];
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if (feature) {
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info.tooltip('hide')
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.attr('data-original-title', feature.get('name'))
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.tooltip('fixTitle')
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.tooltip('show');
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} else {
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info.tooltip('hide');
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}
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}
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});
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});
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