** Manual **

** simpleheat reference: https://github.com/mourner/simpleheat **

** Generate data points with normal distribution **

var Kconst = 1 / ( Math.PI * Math.sqrt(2) );
var dataset = [];

for(var index = 0; index < 500; index++) {

    var point = [];
    point.push( Math.floor( Math.random() * 320) + 1 );
    point.push( Math.floor( Math.random() * 480) + 1 );
    point.push( (Kconst * Math.exp( Math.pow( Math.random(), 2 ) * (-0.5) )));
    dataset.push(point);
}

** constructor -> create a simpleheat object given an id or canvas reference **

var heat = simpleheat("paper"),
  minOpacity = 0.05,
  max = 1,
  point = [ 150, 240, 2 ],
  r = 25,
  r2 = 15,
  grad = { 0.4: 'blue', 0.65: 'lime', 1: 'red' };

** bind data -> set data of [[x, y, value], ...] format **

heat.data(dataset);

** set max data value (1 by default) **

heat.max(max);

** add a data point **

heat.add(point);

** clear data **

heat.clear();

** set point radius and blur radius (25 and 15 by default) **

heat.radius(r, r2);

** set gradient colors as {: ''}, e.g. {0.4: 'blue', 0.65: 'lime', 1: 'red'} **

heat.gradient(grad);
heat.draw(minOpacity);