option = { legend: { top: 'bottom' }, toolbox: { show: true, feature: { mark: { show: true }, dataView: { show: true, readOnly: false }, restore: { show: true }, saveAsImage: { show: true } } }, series: [ { name: 'Nightingale Chart', type: 'pie', radius: [50, 250], center: ['50%', '50%'], roseType: 'area', itemStyle: { borderRadius: 8 }, data: [ { value: 40, name: 'rose 1' }, { value: 38, name: 'rose 2' }, { value: 32, name: 'rose 3' }, { value: 30, name: 'rose 4' }, { value: 28, name: 'rose 5' }, { value: 26, name: 'rose 6' }, { value: 22, name: 'rose 7' }, { value: 18, name: 'rose 8' } ] } ] };