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Fork of D3 Tutotial Video 5 Viz (adding modules)

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CCasualWanderer20XX
Last edited Sep 12, 2025
Created on Sep 12, 2025

A circular swarm of 15 dots orbits a central point, with each dot’s opacity oscillating between transparent and fully opaque as the animation updates 60 times per second. The visualization uses D3 7.9.0’s `select`, `range`, and `selectAll` APIs to render SVG circles, with position and opacity derived from sine and cosine functions of an incrementing time parameter. Data is generated procedurally in `makeData` and passed to the `vizData` renderer, which updates circle attributes via D3’s join operation.

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