This interactive scatter plot visualizes the Iris dataset, cycling through different feature pairs (petal width, sepal width, petal length, sepal length) on the x-axis while keeping sepal length on the y-axis. Circles are color-coded by species (red for setosa, violet for versicolor, orange for virginica) with a static legend. Built with React and D3 v6, it uses `d3.csv` for data loading, `scaleLinear` for scales, and `axisLeft`/`axisBottom` for axes. The plot updates every few seconds via `setInterval`, re-rendering the SVG with animated transitions between variable combinations.