This scatter plot visualizes the Iris dataset, showing sepal length against petal length for three flower species distinguished by different filled symbols. The visualization uses an ordinal scale with D3’s `symbolsFill` to assign shapes to species and includes a custom legend via `shapeLegend`. Axes are generated using `d3.axisLeft` and `d3.axisBottom`, with data loaded asynchronously from a GitHub CSV and parsed by `d3.csvParse`. The plot renders within a full-window SVG.