This scatter plot shows the relationship between sepal length and petal length for Iris flowers, with species distinguished by shape. It uses D3 v7 to map data from an Iris CSV file, employed via `d3.csvParse`, to a chart with axes and a shape legend. The visualization uses a scale-invariant symbol approach with `d3.symbolsFill` and `d3.symbol` for markers, and encodes the categorical variable using an ordinal scale.