This example demonstrates a dynamic scatterplot where a set of circles moves and resizes in a continuous, animated loop, simulating a wave-like pattern. Built with D3.js, the visualization uses the `select` module to target the SVG canvas and the `range` and `join` APIs to bind data to the circles. Each frame, generated by a timer, updates the x, y, and radius attributes of the circles based on a sine function. The data is synthesized on the fly by the `makeData` module, and the rendering is done through SVG elements, creating a smooth, real-time animation.