This scatter plot visualizes the Iris dataset, mapping sepal length on the x-axis against petal length on the y-axis for three species distinguished by different symbol shapes and a custom legend. Built with D3 v7, it uses `scaleLinear` for both axes, `scaleOrdinal` with `symbolsFill` to assign shapes via `symbol` generators, and reusable modules for axes and legends. The plot renders SVG marks with a size of 200, displaying all 150 data points from the CSV source.