ECharts实现简单柱状图（标注）

option = {
     title: {
        text: '某日部分患者病历报告',
        subtext: '纯属虚构'
    },
    legend: {},
    tooltip: {},
    dataset: {
        source: [
            ['product', 'R', 'K', 'MA'],
            ['张三', 43.3, 85.8, 93.7],
            ['李四', 83.1, 73.4, 55.1],
            ['王五', 86.4, 65.2, 82.5],
            ['陈六', 72.4, 53.9, 39.1]
        ]
    },
    xAxis: {type: 'category'},
    yAxis: {},
    // Declare several bar series, each will be mapped
    // to a column of dataset.source by default.