This example visualizes the Iris dataset as a scatter plot, mapping petal length and width to the x- and y-axes while coloring each point by species. The code uses D3 v6 with the `csv`, `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` APIs to load and scale the data, then renders SVG circles with custom fill colors for setosa, versicolor, and virginica. The visualization also includes rotated axis labels for petal length and sepal length, with the plot sized to fill the browser window.