This example creates a scatter plot comparing sepal length to petal length for iris flowers, with species distinguished by symbol shape. It loads data from a remote CSV file using D3's `csvParse` and renders the chart with D3 v7. The visualization uses `scaleLinear` for axes, `scaleOrdinal` with `symbolsFill` for shapes, and a custom legend. Axes are built with `axisLeft` and `axisBottom`, while the shape legend is generated using D3's `symbol` generator, all composed through modular ES6 imports.