This example presents an animated scatter plot of the Iris dataset, with dropdown menus that update the x- and y-axis mappings to any of the dataset’s numeric or categorical attributes. The chart is built using D3 v6 with SVG, and relies on reusable components for the plot and menu. Selection joins with transitions (e.g., `transition.attr`) move points smoothly between positions, while axes also transition to new scales when data attributes change.