1Heatmap = function(canvas, resolutionSlider, data) { 2 this.canvas = canvas.get(0); 3 this.context = this.canvas.getContext('2d'); 4 this.scaleCanvas(); 5 6 this.calculate(data); 7 this.installInputHandlers(canvas, resolutionSlider); 8 9 this.draw(); 10}; 11