Chart.js/test/fixtures/core.scale/y-axis-position-center.json

{
    "config": {
        "type": "scatter",
        "data": {
            "datasets": [{
                "data": [{
                    "x": -20,
                    "y": -30
                }, {
                    "x": 0,
                    "y": 0
                }, {
                    "x": 20,
                    "y": 15
                }]
            }]
        },
        "options": {
            "scales": {
                "x": {
                    "position": "bottom",
                    "axis": "x",
                    "min": -100,
                    "max": 100,
                    "gridLines": {
                        "color": "red",
                        "drawOnChartArea": false
                    },
                    "ticks": {
                        "display": true
                    }
                },
                "y": {
                    "position": "center",
                    "axis": "y",
                    "min": -100,
                    "max": 100,
                    "gridLines": {
                        "color": "red",
                        "drawOnChartArea": false
                    },
                    "ticks": {
                        "display": true
                    }
                }
            }
        }
    },
    "options": {
        "canvas": {
            "height": 256,
            "width": 512
        },
        "spriteText": true
    }
}