This interactive scatter plot uses React and D3.js to visualize the Iris dataset, displaying petal length against sepal width. A color legend maps each species to a distinct color, and hovering over a legend entry highlights data points of that species while fading all others to 20% opacity. The visualization employs D3's `scaleLinear` for axes, `scaleOrdinal` for the color mapping, and SVG circles for data marks, with axes generated by custom React components from the provided files.