This animated scatter plot cycles through different x-axis variables—petal width, sepal width, petal length, and sepal length—for the classic Iris dataset, with y-axis fixed to sepal length. Each flower species is color-coded (steelblue, fuchsia, green) and rendered as circles with distinct radii and fill properties. Using D3 v6 (d3.csv, d3.scaleLinear, d3.axisLeft, d3.axisBottom), the visualization updates every interval via setInterval, rebuilding the axes and labels for each dimension. The code also includes a custom legend and axis titles, with SVG rendering for all marks and text.