This scatter plot visualizes the Iris dataset, comparing petal length against petal width. Each circle’s color encodes the flower species (setosa, versicolor, or virginica), while its horizontal and vertical positioning maps to the selected measurements. The plot uses D3 v6 with SVG rendering, employing `d3.csv` to load data, `scaleLinear` to map values to coordinates, and `axisLeft`/`axisBottom` to display scales. An `axis-label` text element annotates both axes, and circles are placed via `selectAll`/`join`.