This example visualizes the Iris dataset, plotting sepal length against sepal width for individual flowers. Each point is colored by species, with a color legend to the right identifying the three categories. Built with React and D3 v7, the visualization uses `d3.scaleLinear` for axes, `d3.scaleOrdinal` for color mapping, and renders as SVG. Custom React components handle axis ticks and legend marks, with tooltips providing formatted sepal length values on hover.