This example visualizes the Iris dataset as a scatter plot, mapping petal length on the x-axis and petal width on the y-axis, with points colored by species (setosa, versicolor, and virginica). Each circle’s radius is fixed, while its horizontal and vertical offsets correspond to the raw sepal measurements via the `rx` and `ry` attributes. The SVG renders using D3 v6, with `scaleLinear` and `extent` for scaling, `axisLeft` and `axisBottom` for axes, and `csv` to load the external data file.