echarts虚线连接无效值或特殊值

1.把一条线拆两条实线在上虚线在下

实线data中将无效值改为 '-'，虚线是原数组

tooltips单独设置把虚线设置为false

legend选中，用echarts监听选中时间，重新setOption给legend

option = {
  xAxis: {
    type: "category",
    data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
  },
  yAxis: {},
  color:['red','red'],
      legend: {
      selectedMode:true,
      selected: {
    '实线': true,
    '虚线': test
},
      data: ["实线"],
    },
    tooltip: {
      trigger: "axis",
 
    },
  series: [
    {
        name:'实线',
        data: [   '-',
    '-',
    0,
    0,
    0,
    0,
    1,
    1,],
        type: 'line',
            tooltip: {
      trigger: "axis",
      show:true,
    },
       
    },
    {
        name:'虚线',
        data: [   2,
    2,
 0,
    0,
    0,
    0,
    1,
    1,
    ],
        type: 'line',
                    tooltip: {
      trigger: "axis",
      show:false,
    },
        itemStyle: {
            normal: {
                lineStyle: {
                    width: 2,
                        type:'dashed'
                    }
                }
        }
    },
    ]
}

legend//在echarts渲染完成后调用改函数监听事件，vue的nextTick

function valveLegend(params) {
  let myChart = proxy.$refs.valveChart.myChart
  let setOption = proxy.$refs.valveChart.setOption
  myChart.on('legendselectchanged', function(params) {
const value = params.selected[params.name]
option.valve.legend.selected['实线'] = value
option.valve.legend.selected['虚线'] = value
console.log(option.valve.legend,6666)
setOption({
  legend:option.valve.legend
})
// key.value = !key.value
  })}