ngFactor(),
                    r: Math.abs(randomScalingFactor()) / 5,
                }, {
                    x: randomScalingFactor(),
                    y: randomScalingFactor(),
                    r: Math.abs(randomScalingFactor()) / 5,
                }]
            }]
        };

        window.onload = function() {
            var ctx = document.getElementById("canvas").getContext("2d");
            window.myChart = new Chart(ctx, {
                type: 'bubble',
                data: bubbleChar