echarts 多个标记线差别较小时，会自动四舍五入取值是什么原因

Question

echarts 多个标记线差别较小时，会自动四舍五入取值是什么原因

option = {
    tooltip: {
        trigger: 'axis'
    },
    toolbox: {
        show: true
    },
    xAxis: {
        type: 'category',
        boundaryGap: false,
        data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日']
    },
    yAxis: {
        type: 'value',
        max: extent => 14.675,
        min: extent => 14.668
    },
    series: [
        {
            type: 'line',
            data: [ 14.672,
  14.672,
  14.673,
  14.675,
  14.671,
  14.670,
  14.676,],
            markLine: {
                data: [{
                  name: 'X-CL',
                  yAxis: 14.672,
                  lineStyle: { color: "gray" },
                  label: { formatter: 'add1'}
                }, {
                  name: 'X-LCL',
                  yAxis: 14.669,
                  lineStyle: { color: "red" },
                  label: { formatter: 'add2'}
                }, {
                  name: 'X-UCL',
                  yAxis: 14.674,
                  lineStyle: { color: "gray" },
                  label: { formatter: 'add3'}
                }]
            }
        }
        
    ]
};

Answer 1

可能内部做了处理，发现换成字符串就可以