Fix #18206 - [Feature] Enable indicators Radar charts to invert their axis

[jasonpaige]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

This PR adds the ability to 'inverse' any of the axis on a radar chart

Fixed issues

#18206

Details

Before: What was the problem?

Previously a radar chart could look like so:

However, you may which the cost to actually reflect negatively, the more expensive it is.

After: How does it behave after the fixing?

Now this single axis is inverted, where the cheaper the cost, the better it appears on the radar chart.

Document Info

One of the following should be checked.

• 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

Related test cases or examples to use the new APIs

A test case has been added here: test/radar-inverse.html

The API to inverse an indicator axis works by simply adding inverse: true like this:

...
indicator: [
    { name: 'Speed'},
    { name: 'Reaction'},
    { name: 'Power'},
    { name: 'Cost £m', inverse: true, min: 4, max: 0},
    { name: 'Stamina'},
],
...

[echarts-bot]

Thanks for your contribution!
The community will review it ASAP. In the meanwhile, please checkout the coding standard and Wiki about How to make a pull request.

Document changes are required in this PR. Please also make a PR to apache/echarts-doc for document changes and update the issue id in the PR description. When the doc PR is merged, the maintainers will remove the PR: awaiting doc label.

[Ovilia]

This is probably not necessary to be set to indicatorAxis.inverse. You should call indicatorModel.get('inverse') whenever you need the value.

[jasonpaige]

Unfortunately, without this line the test graph does not render as expected. I think the Axes needs to know it is inversed as well as the data model which is why this line is there? I assumed this is how it is achieved on the other charts which support the inverse property as the base Axis class has the inverse property set.

[Ovilia]

Thanks for the information. Yes, others may depend on this information.

[Ovilia]

I've run visual tests about radar cases and all passed.

[Ovilia]

Thanks for the information. Yes, others may depend on this information.

[Ovilia]

@jasonpaige Please check the failed test case in the CI. It's werid that the failed case is not about radar. Please let me know if you fail to figure it out.

[x-merlin-x]

Andy progress on this?

[gkentr]

Also happen to have a need for this currently, looks like the CI logs are not available anymore though.

[github-actions]

This PR has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this PR. We are sorry for this but 2 years is a long time and the code base has been changed a lot. Thanks for your contribution anyway.

[github-actions]

This PR has been automatically closed because it has not had recent activity. Sorry for that and we are looking forward to your next contribution.