li942475402 commented on issue #16124:
URL: https://github.com/apache/echarts/issues/16124#issuecomment-1138266015

   you can change source code by `patch-package`  to support negative values
   detail like this, but i'm not sure if it will bring new problems
   
   step 1,   change this part, use value instand of barHeight,it's the reason 
why not support negative.
   
   
![image](https://user-images.githubusercontent.com/30969393/170442399-16f7321a-f473-4f0f-a6f9-0c0892371220.png)
   
   
   setp 2, add some handle for extreme case
   
   
![image](https://user-images.githubusercontent.com/30969393/170443279-b3edb896-1582-46c5-87bd-b14be0ce2e0c.png)
   
   
   step 3, complete  the remainder part
   
![image](https://user-images.githubusercontent.com/30969393/170443504-09cb8184-6d3c-4ec8-9d83-8800305836a4.png)
   
   


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