Re: [I] [Feature] Support Venn diagram functionality [echarts]

["helgasoft (via GitHub)" <gi...@apache.org>]

helgasoft commented on issue #20965:
URL: https://github.com/apache/echarts/issues/20965#issuecomment-3726239626

   some research about Venn diagrams (Jan/2026) :
   
   Commercial charting libraries like [Highcharts](https://www.highcharts.com/demo/venn-diagram), [jscharting](https://jscharting.com/examples/chart-types/venn/) and AnyChart  support Venn diagrams.
   Free library **Chart.js** has a plugin [chartjs-chart-venn](https://upset.js.org/chartjs-chart-venn/).
   Free library **d3** has it as an [extension](https://github.com/benfred/venn.js).
   I think Venn could be implemented as a custom chart and included in [echarts-custom-series](https://github.com/apache/echarts-custom-series).


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