This interactive scatter plot visualizes the Iris dataset, mapping petal length against sepal width and coloring points by species. A color legend allows users to hover over species labels to highlight only the corresponding data points while dimming others. The visualization is built with React and D3 v5, using d3.scaleLinear for positioning, d3.scaleOrdinal for categorical colors, and custom SVG components for axes and marks. Data loads asynchronously via d3.csv from a GitHub gist.