Cesium
Cesium is designed for three-dimensional map of the Earth and world-class open source JavaScript. It provides a development kit based on the JavaScript language, user-friendly Web applications to quickly build a zero Virtual Earth plug-in, and in performance, precision, and multi-platform rendering quality, ease of use have quality assurance.
Heat map , from the perspective of geography, is a phenomenon some degree of aggregation methods show. Heat map is a visualization of geographic expression, it can make higher than average probability of occurrence of the region can emerge, such as high crime area, high accident area, high warehouse area. Baidu search for "heat map", you can see numerous examples of the heatmap.
Effect of FIG Cesium
specific methods
Cesium is also based heatmap.js this most basic library, and then on this basis, to expand. However, on this basis, we are using Cesium Heatmap Library, which is dedicated to the thermal expansion of Cesium gallery, greatly facilitated our work.
1, reference library js
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<script src="./CesiumHeatmap.js"></script>
2. Create the Earth
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var viewer = new Cesium.Viewer('cesiumContainer', {
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imageryProvider: new Cesium.UrlTemplateImageryProvider({
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url: 'http://www.google.cn/maps/vt?lyrs=s@716&x={x}&y={y}&z={z}'
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})
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});
3, FIG thermal designated area range
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was bounds = {
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west: 147.13833844,
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east: 147.13856899,
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south: -41.43606916,
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north: -41.43582929
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};
4. Create a heatmap objects
For more details see small column this article : GIS House cesium small column
Article provides source code, are interested in this column, you can focus on a wave