This example visualizes the Iris dataset with a scatter plot comparing petal length against petal width, coloring points by species (setosa, versicolor, virginica) in skyblue, lightgreen, and orange. The code loads CSV data via d3.csv, then uses scaleLinear, extent, axisLeft, and axisBottom to map values and render axes in SVG. Circles are positioned using cx/cy attributes, with additional rx/ry properties derived from sepal measurements. Axis labels are rotated and styled using d3 selections.