共用图例

描述:当前是关于Echarts图表中的 折线图 示例。
 
            option = {
  title: {
    text: 'Stacked Area Chart'
  },
  tooltip: {
    trigger: 'axis',
    axisPointer: {
      type: 'cross',
      label: {
        backgroundColor: '#6a7985'
      }
    }
  },
  legend: {
    data: ['Email', 'Union Ads', 'Video Ads', 'Direct', 'Search Engine']
  },
  toolbox: {
    feature: {
      saveAsImage: {}
    }
  },
  grid: [{
    left: '3%',
    top:'8%',
    width: '40%',
    height:'40%',
    bottom: '3%',
    containLabel: true
  },{
    left: '53%',
    top:'8%',
    width: '40%',
    height:'40%',
    bottom: '3%',
    containLabel: true
  },{
    left: '3%',
    top:'50%',
    width: '40%',
    height:'40%',
    bottom: '3%',
    containLabel: true
  },],
  xAxis: [
    {
      gridIndex: 0,
      type: 'category',
      boundaryGap: false,
      data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    {
      gridIndex: 1,
      type: 'category',
      boundaryGap: false,
      data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    {
      gridIndex: 2,
      type: 'category',
      boundaryGap: false,
      data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    }
  ],
  yAxis: [
    {
      gridIndex: 0,
      type: 'value'
    },
   //  {
   //    gridIndex: 0,
   //    type: 'value'
   //  },
    {
      gridIndex: 1,
      type: 'value'
    },
    {
      gridIndex: 2,
      type: 'value'
    }
  ],
  series: [
    { 
      xAxisIndex: 0, // 指定x轴
      yAxisIndex: 0, // 指定y轴
      name: 'Email',
      type: 'line',
      stack: 'Total',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [120, 132, 101, 134, 90, 230, 210]
    },
    {
      xAxisIndex: 0, // 指定x轴
      yAxisIndex: 0, // 指定y轴
      name: 'Union Ads',
      type: 'line',
      stack: 'Total',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [220, 182, 191, 234, 290, 330, 310]
    },
    {
      xAxisIndex: 0, // 指定x轴
      yAxisIndex: 0, // 指定y轴
      name: 'Video Ads',
      type: 'line',
      stack: 'Total',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [150, 232, 201, 154, 190, 330, 410]
    },
    {
      xAxisIndex: 0, // 指定x轴
      yAxisIndex: 0, // 指定y轴
      name: 'Direct',
      type: 'line',
      stack: 'Total',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [320, 332, 301, 334, 390, 330, 320]
    },
    {
      xAxisIndex: 0, // 指定x轴
      yAxisIndex: 0, // 指定y轴
      name: 'Search Engine',
      type: 'line',
      stack: 'Total',
      label: {
        show: true,
        position: 'top'
      },
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [820, 932, 901, 934, 1290, 1330, 1320]
    }, //0
    { 
      xAxisIndex: 1, // 指定x轴
      yAxisIndex: 1, // 指定y轴
      name: 'Email',
      type: 'line',
      stack: 'Total1',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [120, 132, 101, 134, 90, 230, 210]
    },
    {
      xAxisIndex: 1, // 指定x轴
      yAxisIndex: 1, // 指定y轴
      name: 'Union Ads',
      type: 'line',
      stack: 'Total1',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [220, 182, 191, 234, 290, 330, 310]
    },
    {
      xAxisIndex: 1, // 指定x轴
      yAxisIndex: 1, // 指定y轴
      name: 'Video Ads',
      type: 'line',
      stack: 'Total1',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [150, 232, 201, 154, 190, 330, 410]
    },
    {
      xAxisIndex: 1, // 指定x轴
      yAxisIndex: 1, // 指定y轴
      name: 'Direct',
      type: 'line',
      stack: 'Total1',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [320, 332, 301, 334, 390, 330, 320]
    },
    {
      xAxisIndex: 1, // 指定x轴
      yAxisIndex: 1, // 指定y轴
      name: 'Search Engine',
      type: 'line',
      stack: 'Total1',
      label: {
        show: true,
        position: 'top'
      },
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [820, 932, 901, 934, 1290, 1330, 1320]
    }, //1
   { 
      xAxisIndex: 2, // 指定x轴
      yAxisIndex: 2, // 指定y轴
      name: 'Email',
      type: 'line',
      stack: 'Total2',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [120, 132, 101, 134, 90, 230, 210]
    },
    {
      xAxisIndex: 2, // 指定x轴
      yAxisIndex: 2, // 指定y轴
      name: 'Union Ads',
      type: 'line',
      stack: 'Total2',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [220, 182, 191, 234, 290, 330, 310]
    },
    {
      xAxisIndex: 2, // 指定x轴
      yAxisIndex: 2, // 指定y轴
      name: 'Video Ads',
      type: 'line',
      stack: 'Total2',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [150, 232, 201, 154, 190, 330, 410]
    },
    {
      xAxisIndex: 2, // 指定x轴
      yAxisIndex: 2, // 指定y轴
      name: 'Direct',
      type: 'line',
      stack: 'Total2',
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [320, 332, 301, 334, 390, 330, 320]
    },
    {
      xAxisIndex: 2, // 指定x轴
      yAxisIndex: 2, // 指定y轴
      name: 'Search Engine',
      type: 'line',
      stack: 'Total2',
      label: {
        show: true,
        position: 'top'
      },
      areaStyle: {},
      emphasis: {
        focus: 'series'
      },
      data: [820, 932, 901, 934, 1290, 1330, 1320]
    }, //2
  ]
};