A D3 scatter plot visualizes the Iris dataset, mapping petal width against sepal length. Data points use different symbols and colors (yellow, aqua, red) to distinguish iris species. The reusable `scatterPlot` component builds linear scales, ordinal symbol and color scales, and renders SVG paths with an axis. It loads CSV data via `d3.csv` and parses numeric fields, with the plot sized to the full window.