This scatter plot visualizes the relationship between petal length and sepal length for the classic Iris dataset, using purple circles to represent individual flowers. The React-based visualization uses D3 v5's `scaleLinear`, `extent`, and `csv` functions to load and scale the data, rendering the axes and marks as SVG elements. Axis tick labels are formatted with `format('.2s')`, and hover tooltips display the petal length value via an SVG `<title>` element.