option = { polar: { radius: ['56%', '52%'], center: ['50%', '50%'], }, angleAxis: { max: 100, show: false, }, radiusAxis: { type: 'category', show: true, axisLabel: { show: false, }, axisLine: { show: false, }, axisTick: { show: false }, }, series: [{ name: '', type: 'bar', roundCap: true, barWidth: 60, // showBackground: true, // backgroundStyle: { // color: 'transparent', // }, data: [100], coordinateSystem: 'polar', itemStyle: { normal: { color: new echarts.graphic.LinearGradient(0, 1, 0, 0, [{ offset: 0, color: '#585fe1' }, { offset: 1, color: '#0ff' }]), } } }, ] };