ekatrif opened a new pull request, #33:
URL: https://github.com/apache/echarts-custom-series/pull/33
## Description
Add support for custom formatting of the values displayed at the top and
bottom of the `barRange` series.
Currently, `barRange` always appends the Celsius degree symbol (`℃`) to both
values, which limits the series to temperature data represented in Celsius.
This change introduces an optional `valueFormatter` in `itemPayload`.
### Usage
```js
itemPayload: {
valueFormatter: value => `${value} °F`,
}
```
### Backward compatibility
If valueFormatter is not provided, the existing behavior is preserved:
```js
10℃
20℃
```
## Screenshots
<img width="2058" height="836" alt="SCR-20260817-jsvt"
src="https://github.com/user-attachments/assets/7b1afd4f-88e6-45f1-a2a2-0d5a43937758";
/>
<img width="1011" height="411" alt="image"
src="https://github.com/user-attachments/assets/703285c3-b426-428d-a727-d50551d92cf9";
/>
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