How to create a heatmap on the map using JavaScript, Openlayers and canvas

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This article is a continuation of the article “Heatmap and Interpolation: it is easy in OpenWebGIS” about creation of Heatmap and Interpolation with the help of OpenWebGIS interface. We are now describing the process of creating a heatmap, based on any point layer, using JavaScript, OpenLayers 2.x and canvas element (as part of HTML5 technology).
Please read more about it in my article here:Heatmap, JavaScript, Openlayers and canvas
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