smallyunet commented on issue #10991: themeRiver get all data of the river in the formatter. 主题河流图获取某一河流在所有时间点的数据 URL: https://github.com/apache/incubator-echarts/issues/10991#issuecomment-553430140 Sorry, I didn't clearly describe the problem. As your example, the value of the parameter `name` will not change. I hope that the contents of the hover box can change as the mouse position changes. My trouble is that the theme river map is a single axis, and the parameter param of the `formatter` function can only dynamically get the value of the axis (date). In other words, the parameter value of the function `formatter` can only change with the lateral movement of the mouse, and does not change with the vertical movement of the mouse.  I hope that the content of the floating window in the image can be the data of `SS` at all times, not the data of all rivers in `11-04-2015`. And with the vertical movement of the mouse, the contents of the floating box will display the data of the rivers such as `DQ`, `TY`. The content of the current hover box can only change with the date. This may seem a bit difficult and should be. I just want to make a suggestion and communicate at any time. @deqingli
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