option = {
    aria: {
        show: true
    },
    title: {
        text: '某站点用户访问来源',
        left: 'center'
    },
    series: [
        {
            name: '访问来源',
            type: 'pie',
            data: [
                { value: 335, name: '直接访问' },
                { value: 310, name: '邮件营销' },
                { value: 234, name: '联盟广告' },
                { value: 135, name: '视频广告' },
                { value: 1548, name: '搜索引擎' }
            ]
        }
    ]
};