code: function drawPoints(ctx, points, radius, color) {
    const data = points.buffer().values;
  
    for (let i = 0; i < data.length; i += 2) {
      const pointY = data[i];
      const pointX = data[i + 1];
  
      if (pointX !== 0 && pointY !== 0) {
        ctx.beginPath();
        ctx.arc(pointX, pointY, radius, 0, 2 * Math.PI);
        ctx.fillStyle = color;
        ctx.fill();
      }
    }
  }
docs: Used by the drawHeatMapValues method to draw heatmap points on to
  the canvas