MonsterGene opened a new issue #10495: 使用dataset时， 系列名为纯数字时出现报错 URL: https://github.com/apache/incubator-echarts/issues/10495 ### Version 4.2.0-rc.2 ### Reproduction link [https://gallery.echartsjs.com/editor.html?c=x8jkUo5I1l&v=1](https://gallery.echartsjs.com/editor.html?c=x8jkUo5I1l&v=1) ### Steps to reproduce 重现链接中代码即为报错状态，在代码中有描述。 ### What is expected? 修复bug。 ### What is actually happening? 出现报错，无法正常显示图表。 <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE --> 使用echart版本： 4.2.0 Chrome版本： 74.0（32位） 相信与版本无关。 当数据为如下样子时， 会报下面的错误： ``` dataset: { source: [ ["value","8","9","10","11","12", '13', '14', '15', '16', '17', '18'], [0.057,0,0,0,0,0,0,0,0,0,0,0], [0.076,2,11,12,25,40,49,38,42,61,62,37], [0.095,0,1,1,3,8,5,7,9,11,8,7], [0.114,0,1,3,2,3,5,6,7,9,8,5], ] } ``` 报错信息： TypeError: Cannot read property 'width' of undefined 查看源代码，报错位置如下： ``` // In case width or height are too small. function getLineWidth(itemModel, rawLayout) { var lineWidth = itemModel.get(BAR_BORDER_WIDTH_QUERY) || 0; return Math.min(lineWidth, Math.abs(rawLayout.width), Math.abs(rawLayout.height)); } ``` 报错情况： 当数据系列小于等于5时，显示没有问题，大于5个就会出现上面的报错。系列大于五个时，系列名必须为字母开头的字符串才不会报错。 此问题也有其他人提交过，希望echarts开发团队尽快修复bug。 希望尽快得到得到官方的解释或者修复bug，谢谢。
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