This animated scatter plot visualizes the Iris dataset, showing the relationship between petal width and sepal length for three flower species. The visualization cycles through different variable pairings every two seconds, rotating among petal_width, sepal_width, petal_length, and sepal_length on the x-axis. Built with D3 v6, the example uses `scaleLinear` and `scaleOrdinal` for axes and color encoding, with circles rendered as SVG elements. Data loads from a GitHub Gist CSV, and the reusable `scatterPlot` function updates axes and marks dynamically through a `setInterval` loop.