This interactive scatterplot animates the Iris dataset, cycling through four feature-pair combinations on the x-axis while the y-axis displays sepal length. Built with D3.js, it renders color-coded circles for three species, with a legend and dynamic axis labels. The visualization uses `d3.csv` for data loading, `d3.scaleLinear`, `d3.axisLeft`, and `d3.axisBottom` for scaling and axes, and `setInterval` for the animation. An SVG element fills the viewport, and the plot updates its x-value mapping based on the current column index.