This example presents a reusable scatter plot visualizing the Iris Dataset, cycling through four flower measurements—petal width, sepal width, petal length, and sepal length—as the x-axis every two seconds while the y-axis remains fixed on sepal length. Built with D3 v6, the code uses `scaleLinear`, `extent`, `axisLeft`, `axisBottom`, and `scatterPlot()` to render SVG circles with animated transitions. Data is loaded via `d3.csv` from a GitHub Gist, and the plot updates in place by re-calling the chart function with new `xValue` accessors.