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Posted to commits@echarts.apache.org by "Seymur (via GitHub)" <gi...@apache.org> on 2026/01/23 16:05:20 UTC
[I] [Bug] Heatmap Axis "time" and "value" type behavior is different between development and production versions [echarts]
Seymur opened a new issue, #21492:
URL: https://github.com/apache/echarts/issues/21492
### Version
6.0.0
### Link to Minimal Reproduction
https://codesandbox.io/p/sandbox/5swcrj
### Steps to Reproduce
1. Add Heatmap type series
2. Set `xAxis` / `yAxis` types either to `value` or `time`
3. Run it in development mode
### Current Behavior
In development mode it throws `Heatmap on cartesian must have two category axes` error. In production it does not. There is a check in the `https://github.com/apache/echarts/blob/master/src/chart/heatmap/HeatmapView.ts` file that causes this behavior.
```
if (__DEV__) {
if (!(xAxis.type === 'category' && yAxis.type === 'category')) {
throw new Error('Heatmap on cartesian must have two category axes');
}
if (!(xAxis.onBand && yAxis.onBand)) {
throw new Error('Heatmap on cartesian must have two axes with boundaryGap true');
}
}
```
### Expected Behavior
It should be the same behavior in both dev and prod modes.
### Environment
```markdown
- OS:
- Browser:
- Framework:
```
### Any additional comments?
_No response_
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Re: [I] [Bug] Heatmap Axis "time" and "value" type behavior is different between development and production versions [echarts]
Posted by "SakshamSinghal20 (via GitHub)" <gi...@apache.org>.
SakshamSinghal20 commented on issue #21492:
URL: https://github.com/apache/echarts/issues/21492#issuecomment-3822287109
I hope this fixes your bug.!
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Re: [I] [Bug] Heatmap Axis "time" and "value" type behavior is different between development and production versions [echarts]
Posted by "Seymur (via GitHub)" <gi...@apache.org>.
Seymur commented on issue #21492:
URL: https://github.com/apache/echarts/issues/21492#issuecomment-3817786810
> If you use it in a way that is not promised or documented, the behavior is not guaranteed. The limitation is documented [here.](https://echarts.apache.org/en/option.html#series-heatmap).
>
> > Rectangular coordinate must have two categories to use it.
>
> As the name suggests, development mode is for development only. During development, you can use the non-minified (development) bundle instead of the .min.js file.
I understand there is a limitation how to use Heatmap axis types. But why isn't it enforced in the production mode. I can change axis type to `time` in Echarts examples editor and it works without any error and shows `Date` in the axis. Isn't it confusing why there is a difference between dev and prod modes. Last time I spent a lot of time to see why the exactly same code works in Echarts editor and not in my local development environment.
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Re: [I] [Bug] Heatmap Axis "time" and "value" type behavior is different between development and production versions [echarts]
Posted by "Justin-ZS (via GitHub)" <gi...@apache.org>.
Justin-ZS commented on issue #21492:
URL: https://github.com/apache/echarts/issues/21492#issuecomment-3802793326
The limitation is documented [here.](https://echarts.apache.org/en/option.html#series-heatmap).
> Rectangular coordinate must have two categories to use it.
As the name suggests, development mode is for development only.
During development, you can use the non-minified (development) bundle instead of the .min.js file.
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