折线图brush组件没有数据出来,是Bug吗?怎么修复
Open
enhancement
priority: high
- Dominant language
- TypeScript
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Description
### One-line summary [问题简述]

折线图brush 没有数据
### Version & Environment [版本及环境]
+ ECharts version [ECharts 版本]: 3.7.1
+ Browser version [浏览器类型和版本]: Chrome
+ OS Version [操作系统类型和版本]: Win7
### Expected behaviour [期望结果]
希望有brush 后有数据出来
### ECharts option [ECharts配置项]
```javascript
option = {
}
```
### Other comments [其他信息]
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