This scatter plot displays Iris flower measurements, plotting sepal length against petal length for individual specimens. Each point’s shape encodes the species category, with a dedicated legend identifying the three species groups. The visualization loads the Iris dataset from a GitHub-hosted CSV file and parses it using `d3.csvParse`. It renders marks using the `d3.symbol` API with `symbolsFill` to generate different point shapes, while `d3.scaleLinear` and `d3.scaleOrdinal` handle positional and categorical scaling, and custom axes and legend components are assembled using D3 selections.