Can you add contour map

[Alexander-txj]

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

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[Alexander-txj]

like this The last is the polar coordinate contour map that I realized with d3

[plainheart]

Perhaps, the contour chart can be an extension of ECharts, just like echarts-wordcloud and echarts-liquidfill.

[robertabenassi]

I am available for help in implementing such a feature. @Ovilia please, let me know.

[nvelden]

Any updates on this? Would love to have this feature and as mentioned above it has loads of use cases.

[Ovilia]

I am available for help in implementing such a feature. @Ovilia please, let me know.

Sorry for late reply. What kind of help do you need?

[Ovilia]

You may consider implementing with custom series.

[Civilduino]

Any updates on the implementation of Contour plots in ECharts?

[sunpcm]

Do we have any updates or workaround for Contour plots?

[helgasoft]

@Ovilia mentioned custom series.
Contour plots are doable with custom.polygon, see #18344.

[RobertaBenassiExt]

Hi all, anyone is working on this request?

[helgasoft]

As @plainheart said - good candidate for an extension, but not for an integral part of ECharts. There are two separate questions here: 1) how to extract contours and 2) how to display contours. Extracting contours from XYZ data is data preparation, done by specialized libraries. Displaying contours is already feasible in ECharts with series type 'line' or 'custom-polygon' (for filled areas). Below are two examples displayed with ECharts.

https://github.com/apache/echarts/assets/13038071/4c1db922-2e28-4f5b-9fda-36b515d9d170

[humphreylee]

I like to use scatter with contour, particularly for data science visualization. Supporting it for inclusion in EChart 6.0