Fork of D3 Selection Exploration
Ten animated circles move vertically and pulse in size along a sine wave, while a black line connects their centers to show the waveform’s shape. The visualization runs at 60 frames per second, updating each frame with new data generated from trigonometric functions in `makeData.js`. It uses the D3.js API, specifically `select`, `append`, `range`, and the `join` method on SVG groups to create and update circles and paths. The rendering is SVG-based, with animations driven by a JavaScript `setInterval` loop.