plainheart opened a new pull request, #21752:
URL: https://github.com/apache/echarts/pull/21752
## Brief Information
This pull request is in the type of:
- [x] bug fixing
- [ ] new feature
- [ ] others
### What does this PR do?
Fix that the mark line is not at the expected position due to precision loss
when it targets a specific axis value.
For example:
```ts
{
yAxis: 2.0156
}
```
Since `precision` defaults to `2`, the mark line above is rounded to `2.02`.
So it appears in an unexpected position and even disappears when `yAxis.min` is
`2.015`.
I think we should retrieve precision from the value rather than using the
default precision when it targets a specific axis value to ensure it is at the
expected position.
### Fixed issues
Fixes #21743
## Comparison
| Before | After |
| :----: | :----: |
| <img width="800" height="600" alt="Before"
src="https://github.com/user-attachments/assets/8645fb32-37ec-4c54-84ed-77b71f3c74d3";
/> | <img width="800" height="600" alt="After"
src="https://github.com/user-attachments/assets/f9738733-d58b-4237-bc77-db41034e2215";
/> |
## Document Info
One of the following should be checked.
- [x] This PR doesn't relate to document changes
- [ ] The document should be updated later
- [ ] The document changes have been made in apache/echarts-doc#xxx
## Misc
### Security Checking
- [ ] This PR uses security-sensitive Web APIs.
<!-- PLEASE CHECK IT AGAINST:
<https://github.com/apache/echarts/wiki/Security-Checklist-for-Code-Contributors>
-->
### ZRender Changes
- [ ] This PR depends on ZRender changes (ecomfe/zrender#xxx).
### Related test cases or examples to use the new APIs
test/markLine-precision.html
### Merging options
- [ ] Please squash the commits into a single one when merging.
### Other information
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