ctc1995 opened a new issue #10073: 在使用markArea属性时报错 URL: https://github.com/apache/incubator-echarts/issues/10073 ``` option = { xAxis: { type: 'category', data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'] }, yAxis: { type: 'value' }, series: [{ data: [120, 200, 150, 80, 70, 110, 130], type: 'bar', markLine: { symbol: 'none', lineStyle: { color: 'blue', type: 'solid', width: 4, }, data: [ [{ x: '20%', y: '42.5%' }, { x: '22.6%', y: '11.4%' }], [{ x: '31.8%', y: '11.4%' }, { x: '34%', y: '31%' }], // 自己去计算百分比 ] }, markArea: { data: [ [ { x: '20%', y: '42.5%' }, { x: '22.6%', y: '11.4%' } ] ] } }] }; ``` 这段代码，在运行时会报如下错误： `Cannot read property '0' of undefined` 我想要用echarts绘制一个带有连接线的柱状图。我通过markLine可以绘制连接线，但是我需要在连接区域写样式，并且加入一些标签说明。当我定义markArea时发生了上述报错。 请问我该如何设置markArea？
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