[new-feature] lines连接cartesian2d和geo坐标系

[dwzhanglong]

What problem does this feature solve?

目前geo坐标系和cartesian2d的连线都是各自独立的，请教一下如何实现两个坐标系的点连线，如果已有解决方法，请告知一下，不胜感激！

What does the proposed API look like?

目前geo坐标系和cartesian2d的连线都是各自独立的，请教一下如何实现两个坐标系的点连线，如果已有解决方法，请告知一下，不胜感激！

[echarts-bot[bot]]

@dwzhanglong It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people and get helped, we'd like to suggest using English next time. 🤗

TRANSLATED

TITLE

[new-feature] lines connect the cartesian2d and geo coordinate systems

BODY

What problem does this feature solve?

At present, the connection between the geo coordinate system and cartesian2d is independent of each other. Please tell me how to realize the point connection between the two coordinate systems. If there is a solution, please let me know, I would be very grateful!

What does the proposed API look like?

At present, the connection between the geo coordinate system and cartesian2d is independent of each other. Please tell me how to realize the point connection between the two coordinate systems. If there is a solution, please let me know, I would be very grateful!

[dwzhanglong]

just like this，the purple block in the upper left corner is connected to a point on the map

[github-actions[bot]]

This issue has been automatically marked as stale because it did not have 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 issue.

[github-actions[bot]]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!