GitHub - substack/node-heatmap: canvas heatmaps in node.js and the browser

var heatmap = require('heatmap'); var heat = heatmap(500, 500, { radius : 30 }); for (var i = 0; i < 5000; i++) { var rho = Math.random() * 2 * Math.PI; var z = Math.pow(Math.random(), 2) * 200; var x = 250 + Math.cos(rho) * z; var y = 250 + Math.sin(rho) * z; heat.addPoint(x, y); } heat.draw(); var fs = require('fs'); fs.writeFileSync('blob.png', heat.canvas.toBuffer()); methods var heatmap = req

[moongift]

Canvasヒートマップ

[heavenshell]

"canvas heatmaps in node.js and the browser"