This interactive scatter plot displays the Iris dataset, allowing users to select which floral measurements appear on the X and Y axes via dropdown menus. The visualization uses D3 scales for positioning and color encoding, rendered as SVG circles through React components. A color legend highlights individual species on hover by fading other data points, filtering the underlying display. The example demonstrates combining a React interface with D3's `scaleLinear` and `scaleOrdinal` for interactive exploration.