option = { angleAxis: { type: 'category', data: ['S1', 'S2', 'S3'] }, radiusAxis: { min: 1, max: 6 }, polar: { }, series: [{ type: 'bar', data: [2, 2, 2], coordinateSystem: 'polar', itemStyle:{ color:"blue" }, name: 'A', stack: 'a' }, { type: 'bar', data: [2, 2, 2], coordinateSystem: 'polar', name: 'B', stack: 'a' }, { type: 'bar', data: [2, 2, 2], coordinateSystem: 'polar', name: 'C', stack: 'a' }], legend: { show: true, data: ['A', 'B', 'C'] } };