This scatter plot visualizes the Iris dataset, showing petal length against petal width for three species—setosa, versicolor, and virginica—with each point colored by species. Data is loaded from a CSV file via `d3.csv` and parsed with custom row conversion. The plot uses `d3.scaleLinear`, `d3.axisLeft`, and `d3.axisBottom` to map the data, while circles are appended to an SVG with a fixed radius and fill colors determined by a species-based switch function. Axis labels are added as SVG text elements.