This visualization displays the classic Iris dataset as a scatter plot, mapping sepal length on the x-axis against petal length on the y-axis, with points colored by species via a categorical ordinal scale. The chart uses custom D3 v7 modules for axes and a shape legend, employing `scaleLinear` for coordinate scaling, `scaleOrdinal` with `symbolsFill` to assign distinct marker shapes, and a `symbol` generator for drawing them. Data is loaded asynchronously from a CSV file using `csvParse` and rendered within an SVG that resizes to the full window.