Generates a heatmap from coordinates loaded from "coords-list.txt".

heatmap.js

var heatmap = require('heatmap');
var fs = require('fs');

var heat = heatmap(6000, 6000, { radius : 30 });

fs.readFile('coords-list.txt', 'utf8', function(error, data)
{
	var arr = data.split("\r\n");

	for (var i = 0; i < arr.length; i++)
	{
		var xy = arr[i].split(", ");

		console.log("x: "+(parseInt(xy[0]) + 3000)+" y: "+(6000 - (parseInt(xy[1]) + 3000)));

		heat.addPoint(parseInt(xy[0]) + 3000, 6000 - (parseInt(xy[1]) + 3000));
	};

	console.log("executing: heat.draw");
	heat.draw();

	console.log("executing: fs.writeFileSync");
	fs.writeFileSync('blob.png', heat.canvas.toBuffer());

	console.log("Done!");
});