堆叠柱状图 stacked-bar ​

  <ev-chart
    :options="{
      type: 'stacked-bar',
      title: '渠道转化构成',
      labels: ['周一', '周二', '周三', '周四', '周五'],
      series: [
        { name: '自然流量', data: [120, 132, 101, 134, 90] },
        { name: '广告投放', data: [80, 92, 91, 94, 70] },
        { name: '老客召回', data: [45, 52, 61, 48, 66] },
      ],
      legend: { show: true },
    }"
    :height="260"
  />