echarts仪表盘颜色渐变

echarts仪表盘背景颜色渐变，offset设置偏移量

代码

option = {
    tooltip : {
        formatter: "{a} <br/>{b} : {c}%"
    },
    toolbox: {
        feature: {
            restore: {},
            saveAsImage: {}
        }
    },
    series: [
        {
            name: '业务指标',
            type: 'gauge',
            detail: {formatter:'{value}%'},
            data: [{value: 50, name: '完成率'}],
             axisLine: {
                show: true,
                lineStyle: {
                  color: [
                    [1,new echarts.graphic.LinearGradient(0, 0, 1, 0, [
                      {
                        offset: 0.1,
                        color: "#FFC600"
                      },
                      {
                        offset: 0.6,
                        color: "#30D27C"
                      },
                      {
                        offset: 1,
                        color: "#0B95FF"
                      }
                    ])
                  ]
                ]
                  
                }
             }
            
        }
    ]
};

setInterval(function () {
    option.series[0].data[0].value = (Math.random() * 100).toFixed(2) - 0;
    myChart.setOption(option, true);
},2000);