40 lines
957 B
JavaScript
40 lines
957 B
JavaScript
goog.require('ol.Map');
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goog.require('ol.View2D');
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goog.require('ol.layer.Heatmap');
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goog.require('ol.layer.Tile');
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goog.require('ol.source.KML');
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goog.require('ol.source.Stamen');
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var vector = new ol.layer.Heatmap({
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source: new ol.source.KML({
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projection: 'EPSG:3857',
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url: 'data/kml/2012_Earthquakes_Mag5.kml'
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}),
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radius: 5
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});
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vector.getSource().on('addfeature', function(event) {
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// 2012_Earthquakes_Mag5.kml stores the magnitude of each earthquake in a
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// standards-violating <magnitude> tag in each Placemark. We extract it from
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// the Placemark's name instead.
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var name = event.feature.get('name');
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var magnitude = parseFloat(name.substr(2));
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event.feature.set('weight', magnitude - 5);
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});
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var raster = new ol.layer.Tile({
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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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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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