This scatter plot visualizes the relationship between sepal length and petal length for iris flowers, with species encoded by symbol shape. A shape legend identifies the species categories. The visualization uses D3 v7 modules including `scaleLinear`, `scaleOrdinal`, `symbol`, `axisLeft`, and `axisBottom`, with data loaded from a remote CSV file via `csvParse`. Axes and legend are rendered as reusable functions, while marks use generated SVG path symbols.