mxxlrfu opened a new issue, #19498:
URL: https://github.com/apache/echarts/issues/19498
### What problem does this feature solve?
I was working on a label position switch from `top` to `bottom` based on the
highlighted point coordinates — _in order to avoid the label to overflow the
chart area_. I tried different things, like tweaking the tooltip configuration
since its `position` property provides many information ...But the coordinates
are the mouse's and not the highlighted `point`.
Unless I didn't find the right way to do this, I had to first combine the
`seriesIndex` and `dataIndex` with the `getOption` method, fetch the `value`
and use it along with `seriesIndex` with the `convertToPixel` method to finally
get the coordinates. It's not obvious and it feels like something is missing.
### What does the proposed API look like?
Currently, the information provided by the highlight event on line charts is
the following, it's very tiny...
```json
{
"type": "highlight",
"escapeConnect": true,
"batch": [
{
"seriesIndex": 0,
"dataIndexInside": 24,
"dataIndex": 24,
"type": "highlight",
"escapeConnect": true,
"notBlur": true,
"batch": null
}
]
}
```
Is it possible to add the `value` here so we can skip the `getOption` part?
Or even better, having a dynamic positioning of labels in the chart config ?
Something similar to the tooltip's ^^
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