Chord Diagram Using D3 (From Graph Gallery)

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Chord Diagram Using D3 (From Graph Gallery)

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Last edited Aug 14, 2025

Created on Aug 14, 2025

Forked from Fork of Time Series Graph Using D3

A chord diagram visualizes the flow of values among four named entities—Allen, Betty, Charlie, and Dennis—using a 4x4 matrix as input. The d3.v4 library renders the diagram in SVG, with colored arcs and ribbons where each ribbon’s color matches its source group. Interactive mouseover events trigger tooltips displaying the source and target names, while a fading transition animates tooltip opacity on mouseout. The chart relies on `d3.chord()` for layout, `d3.arc` and `d3.ribbon` for geometry, and inline event handlers for tooltip display.

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