This example displays a scatter plot of the Iris dataset, mapping petal length on the x-axis and petal width on the y-axis, with points colored by species (setosa, versicolor, virginica) using skyblue, lightgreen, and orange. The visualization is rendered as an SVG via D3 v6, loaded from UNPKG, using `d3.csv` to fetch the data, `d3.scaleLinear` for axes, and `d3.axisLeft` and `d3.axisBottom` for tick marks. The code also includes redundant `rx`/`ry` attributes on the circles, though the radius is fixed at 5 pixels.