This animated scatter plot displays the Iris dataset, cycling through four feature pairings (petal width, sepal width, petal length, and sepal length) on the x-axis while keeping sepal length on the y-axis. Colored circles represent the three iris species (setosa, versicolor, virginica) with a fixed legend. Built with D3.js, it uses `csv` for data loading, `d3.scaleLinear` for scaling, and `d3.axisLeft`/`d3.axisBottom` for axes, with a `setInterval` loop updating the x-value accessor to animate transitions. SVG rendering displays the full-screen plot with custom labels.