public/data/tree-radial.js

myChart.showLoading();
$.get(ROOT_PATH + 'data/asset/data/flare.json', function (data) {
    myChart.hideLoading();

    myChart.setOption(option = {
        tooltip: {
            trigger: 'item',
            triggerOn: 'mousemove'
        },
        series: [
            {
                type: 'tree',

                data: [data],

                top: '18%',
                bottom: '14%',

                layout: 'radial',

                symbol: 'emptyCircle',

                symbolSize: 7,

                initialTreeDepth: 3,

                animationDurationUpdate: 750

            }
        ]
    });
});