O gráfico de dispersão echarts define a centralização do texto do ponto e a separação da linha pontilhada

renderizações

option = {
  dataset: {
    dimensions:['dept','age'],//设置x轴和y轴的数据
    source:[
      {dept:'5',age:'500',num:'10'},
      {dept:'5',age:'100',num:'20'},
      {dept:'10',age:'300',num:'30'},
      {dept:'15',age:'500',num:'10'},
      {dept:'20',age:'500',num:'10'},
      {dept:'10',age:'100',num:'10'},
      {dept:'15',age:'500',num:'10'},
      {dept:'10',age:'200',num:'10'},
      {dept:'xx',age:'100',num:'10'},
      {dept:'xx',age:'300',num:'10'},
      {dept:'xx',age:'200',num:'10'},
      {dept:'15',age:'300',num:'10'},
      {dept:'xx',age:'400',num:'10'},
    ],
  },
  xAxis: {
    type:'category',
    axisTick:{
      show:false
    },
    axisLine:{
      show:true,
      lineStyle:{
        color:'#000',
        width:1,
        type:'solid',
      }
    },
    splitLine:{
      show:true,
      lineStyle:{
        color:'#ccc',
        type: [20, 5],//20为虚线长度，5为间距
        dashOffset: 0//距离x轴的距离
      }
    }
  },
  yAxis: {
     type:'category',
     axisTick:{
      show:false
    },
    axisLine:{
      show:true,
      lineStyle:{
        color:'#000',
        width:1,
        type:'solid',
      }
    },
    splitLine:{
      show:true,
      lineStyle:{
        color:'#ccc',
        width:1,
       type: [20, 5],//20为虚线长度，5为间距
       dashOffset: 0//距离y轴的距离
      }
      
    }
  },
  series: [
    {
      type: 'scatter',
      symbolSize(data){
      	//根据数据大小来动态设置散点的大小（但是不能超出方框外面）
        let result = parseInt(data.num)*5;
        if (result>0 && result < 25) {
          result = 25;
        }else if(result>100){
          result = 100;
        }
        return result;
      },
      //显示中心的文字
      label:{
        show:true,
        fontSize:16,
        position:'inside',
        color:'#fff',
        formatter(params){
          return params.value.num+'人'
        }
      },
      itemStyle:{
        color(params){
          let color = '';
          let num = parseFloat(params.value.num);
          if(num<=10){
            color = '#5B8FF9';
          }else if(num>10 && num<=20){
            color = '#5AD8A6';
          }else{
            color = '#5D7092';
          }
          return color;
        }
      }
    }
  ]
};