This example presents an animated scatter plot of Fisher’s Iris dataset, cycling every two seconds between four measured features (petal width, sepal width, petal length, and sepal length). Built with D3 v6, it uses `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to render axes and circles in SVG. The chart is implemented as a reusable function via a closure pattern, allowing dynamic updates by re-calling the plot with a new `xValue`. Data is loaded as CSV via `d3.csv` and parsed into numeric values.