{
    "config": {
        "type": "bubble",
        "data": {
            "datasets": [{
                "data": [
                    {"x": 0, "y": 3, "r": 0},
                    {"x": 1, "y": 3, "r": 2},
                    {"x": 2, "y": 3, "r": 4},
                    {"x": 3, "y": 3, "r": 8},
                    {"x": 4, "y": 3, "r": 16},
                    {"x": 5, "y": 3, "r": 32}
                ],
                "backgroundColor": "#00ff00",
                "borderColor": "transparent",
                "borderWidth": 0
            }, {
                "data": [
                    {"x": 0, "y": 2, "r": 0},
                    {"x": 1, "y": 2, "r": 2},
                    {"x": 2, "y": 2, "r": 4},
                    {"x": 3, "y": 2, "r": 8},
                    {"x": 4, "y": 2, "r": 16},
                    {"x": 5, "y": 2, "r": 32}
                ],
                "backgroundColor": "transparent",
                "borderColor": "#0000ff",
                "borderWidth": 1
            }, {
                "data": [
                    {"x": 0, "y": 1, "r": 0},
                    {"x": 1, "y": 1, "r": 2},
                    {"x": 2, "y": 1, "r": 4},
                    {"x": 3, "y": 1, "r": 8},
                    {"x": 4, "y": 1, "r": 16},
                    {"x": 5, "y": 1, "r": 32}
                ],
                "backgroundColor": "#00ff00",
                "borderColor": "#0000ff",
                "borderWidth": 2
            }]
        },
        "options": {
            "responsive": false,
            "legend": false,
            "title": false,
            "elements": {
                "point": {
                    "pointStyle": "dash"
                }
            },
            "layout": {
                "padding": 40
            },
            "scales": {
                "xAxes": [{"display": false}],
                "yAxes": [{"display": false}]
            }
        }
    },
    "options": {
        "canvas": {
            "height": 256,
            "width": 512
        }
    }
}