This scatter plot displays the Iris dataset, mapping petal length and petal width as the primary x and y coordinates, while the data points are colored by species (setosa, versicolor, and virginica) using a custom color scheme. The visualization also encodes sepal length and width as the `rx` and `ry` attributes of each circle, though this does not affect the visual rendering since the radius is fixed. Built with D3 v6, the code uses `d3.csv` to load the data, `d3.scaleLinear` for axes, and `d3.axisLeft` and `d3.axisBottom` for the chart's labels.