This scatter plot visualizes the Iris dataset, showing the relationship between sepal and petal measurements. Points are colored by species, with setosa in green, versicolor in purple, and virginica in red. The visualization uses D3's scaleLinear for axes, extent for domain calculation, and axisLeft/axisBottom for chart rendering. The code loads CSV data, parses numeric fields, and renders circles with SVG. The plot demonstrates how D3's selection joins and margin calculations work to create a functional scatter plot.