散点气泡图怎么随机分布echarts scatter配置项内容和展示

      var plantCap = [{
    name: '中国大陆',
    value: '222'
}, {
    name: '90年代',
    value: '115'
}, {
    name: '张艺谋',
    value: '113'
}, {
    name: '成龙',
    value: '95'
}, {
    name: '香港',
    value: '92'
}, {
    name: '00年代',
    value: '87'
}, {
    name: '美国',
    value: '87'
}, {
    name: '李连杰',
    value: '60'
}];

var datalist = [{
    offset: [56, 48],
    symbolSize: 120,
    opacity: .95,
    color: '#f467ce'
}, {
    offset: [35, 80],
    symbolSize: 95,
    opacity: .88,
    color: '#7aabe2'
}, {
    offset: [20, 43],
    symbolSize: 90,
    opacity: .84,
    color: '#ff7123'
}, {
    offset: [83, 30],
    symbolSize: 90,
    opacity: .8,
    color: '#ffc400'
}, {
    offset: [36, 20],
    symbolSize: 65,
    opacity: .75,
    color: '#5e333f'
}, {
    offset: [64, 10],
    symbolSize: 70,
    opacity: .7,
    color: '#6b3442'
}, {
    offset: [75, 75],
    symbolSize: 60,
    opacity: .68,
    color: '#8a3647'
}, {
    offset: [88, 62],
    symbolSize: 50,
    opacity: .6,
    color: '#68333f'
}];
var datas = [];
for (var i = 0; i < plantCap.length; i++) {
    var item = plantCap[i];
    var itemToStyle = datalist[i];
    datas.push({
        name:   item.name,
        value: itemToStyle.offset,
        symbolSize: itemToStyle.symbolSize,
        label: {
            normal: {
                textStyle: {
                    fontSize: 15
                }
            }
        },
        itemStyle: {
            normal: {
                color: itemToStyle.color,
                opacity: itemToStyle.opacity
            }
        },
    })
}
option = {
    title:{
        text:'有没有散点气泡图随机位置的方法啊，最好不重叠'
    },
    grid: {
        show: false,
        top: 10,
        bottom: 10
    },
    xAxis: [{
        gridIndex: 0,
        type: 'value',
        show: false,
        min: 0,
        max: 100,
        nameLocation: 'middle',
        nameGap: 5
    }],
    yAxis: [{
        gridIndex: 0,
        min: 0,
        show: false,
        max: 100,
        nameLocation: 'middle',
        nameGap: 30
    }],
    series: [{
        type: 'scatter',
        symbol: 'circle',
        symbolSize: 120,
        label: {
            normal: {
                show: true,
                formatter: '{b}',
                color: '#fff',
                textStyle: {
                    fontSize: '20'
                }
            },
        },
        itemStyle: {
            normal: {
                color: '#00acea'
            }
        },
        data: datas
    }]
};