Alexander-txj opened a new issue #13909: URL: https://github.com/apache/incubator-echarts/issues/13909
### What problem does this feature solve? Recently, I am doing industrial drawings, and I need to realize the contour map of the polar coordinate system. Finally, only d3-contour can be used. I think the application of contour map is still very extensive and can be put in echarts. ### What does the proposed API look like? You can refer to Python Matplotlib <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE --> <!-- This issue is in English. DO NOT REMOVE --> ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@echarts.apache.org For additional commands, e-mail: commits-h...@echarts.apache.org