This example displays an interactive scatter plot of the Iris dataset, letting users explore relationships between four floral measurements by changing the X and Y axes via dropdown menus. It includes an ordinal color legend that dims and highlights data points when hovered, visually distinguishing the three iris species. Built with React and D3 v5, the visualization uses `scaleLinear`, `scaleOrdinal`, and the `csv` loader to parse data from a remote URL, rendering SVG circles, axes, and the legend through reusable React components.