This example demonstrates an animated scatter plot that cycles through different Iris flower measurements (petal width, sepal width, petal length, and sepal length) as the x-axis variable every three seconds. Using a reusable D3 scatter plot component, it renders circles in SVG with smooth transitions via `d3.transition()`, where new points grow from radius zero and existing points move to their new positions with staggered delays. The plot uses `d3.scaleLinear` for axes and `d3.extent` for domains, with data loaded from a CSV file using `d3.csv`.