This scatter plot visualizes the Iris dataset, showing petal length against sepal length for three species of iris flowers. Each species is represented by a distinct shape and color: circles for setosa, squares for versicolor, and triangles for virginica. The visualization uses D3 v6 with SVG rendering, employing `d3.scaleLinear` for axes, custom symbol generators from `d3.symbol`, and a legend built with `d3.symbolCircle`, `d3.symbolSquare`, and `d3.symbolTriangle`. Data is loaded from an external CSV file, and axes are labeled with "Sepal Length" and "Petal Length" in centimeters.