This scatter plot visualizes the iris data set, mapping petal length and petal width for each sample while coloring points by species (setosa, versicolor, virginica) using blue, red, and purple. The visualization also encodes sepal dimensions as the `rx` and `ry` attributes of the circles, though these do not affect the visible radius. Built with D3 v6 in React, the code loads CSV data via `d3.csv`, scales axes with `scaleLinear` and `extent`, and renders circles and axes using SVG selections and `axisLeft`/`axisBottom`.