[GitHub] [echarts] lucasgcb edited a comment on issue #15435: Line Stacks showing wrong values in axisPointer tooltip

[GitBox <gi...@apache.org>]

lucasgcb edited a comment on issue #15435:
URL: https://github.com/apache/echarts/issues/15435#issuecomment-890369368


   > We can't not change the origin value, that is the natural of tooltip
   
   What? 
   
   Yes, you can change the value. I have changed it manually with a formatter after personally noticing it, however this is terrible practice because it means that *the tooltip is wrong by default*. This is not explicit in the documentation. It could be fixed without even breaking the API; an option to correct the tooltip based on the line stacking.
    
   This behavior is not natural of tooltips; tooltips are meant to inform the user about meaningful elements. The implementation value for line stacks are not meaningful and in the context of the plot; the tooltip is absolutely incorrect when line stacking is used and could lead to terrible mistakes.


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