plotly / plotly/plotly.js

Performance Issues with Sankey Diagram in react-plotly.js with large data

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bug P3 performance
Dominant language
JavaScript
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Description

I'm experiencing performance issues when using react-plotly.js to create a Sankey diagram in a Next.js project. When I use a large dataset, the application crashes. I have created a sample project with some data that demonstrates the problem. The project works if I limit each part to 4 values.

Here is the link to the sample project: https://jsfiddle.net/hongquanhak/foawx0Ld/1/

Is there any way to improve the performance of the Sankey diagram with large datasets?

Thank you for your help!

Contributor guide

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First steps

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Research direction

Start with the linked JSFiddle sample project and reproduce the Sankey diagram crash using the larger dataset, then compare it with the four-values-per-part case. Identify which part of the demonstrated rendering path causes the performance failure; done means the large dataset renders without crashing with a measurable performance improvement.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, next.js, react
Domain
data-visualization, frontend, performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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